FRATERNA Official Bulletin Of The Volume 1 5 #1 INTERNATIONAL HOYA ASSOCIATION Jan.-Mar. 2002 Hoya juannguoiana Kloppenburg Photo by Dale Kloppenburg LUESTER T. MERTZ LIBRARY FEB 2 6 2002 NEW YORK BOTANICAL GARDEN INTERNATIONAL HOYA ASSOCIATION Administrative Office; 1444 E. Taylor St. Vista, CA 92084 Phone: (760) 758-4290 Fax; (760) 945-8934 E-Mail: RBGdns@aol.com A Non-Profit Organization Bulletin published quarterly. ISSN 10055-4564 web page: www. interiiatioiial-hoya.org I.H.A. Affiliates 2002 rates for a 1 year membership (USA), which includes our quarterly publication are $18.00 per year. Outside the United States: U.S. $25.00 per year, sent via airmail. Officers And Editors President Vice President Secretary/T reasurer Editor Assistant Editor & Web Administrator Dr. Harriette Schapiro Chuck Everson Ann Wayman Dale Kloppenburg Edward Gilding San Diego Exotic Pant and Hoya Group, San Diego, CA. Svenska Hoya Salskapet, Borlange, Sweden Editorial Policy Errors of fact may occur from time to time in "Fraterna". It is the policy of the IHA to publish corrections of fact, but will not comment on matters of opinion expressed in other publications. Fraterna Board Of Directors Dale Kloppenburg Ted Green Dr. Vic Sencindiver Correspondence Secretary 08008 Round Robin: Rosemary Peterson William J. Wayman Jerry Williams Dr. Vic Sencindiver 908 S. Beach Ave. Beach Haven, NJ. Rosemary Peterson 6262 E. Killdee St. Long Beach, CA. 90808 e-maii:rsmary940@aol.com Membership Sec’y. Jerry Williams Slide Librarian 1 444 E. Taylor St. Vista, CA. 92084 Honorary Board Members Fraterna is the official quarterly bulletin published by the International Hoya Association. The administrative office is located at; 1444 E. Taylor St., Vista, CA. 92084-3308. Opinions stated in articles and editorials of Fraterna do not necessarily represent opinions of other I.H.A. members, the Board of Directors, or its officers. All articles submitted to Fraterna for possible publication may be edited for grammar, form and content. All material in Fraterna may be reprinted by non-profit organizations (unless permission is expressly denied in a note accompanying the material) provided that proper credit is given to I.H.A. Fraterna and the author, and one copy of the publication containing the reprint be sent to the I.H.A. administrative office. No reproduction in whole or part by any other organization, publication or individual, is permitted except by permission of the editor. Representing Europe; Eva-Karin Wiberg Editor's e-mail address: rdk03@cvip.net Representing S.W. U.S.; Mary Jo Gussett Representing Central Europe: Ruurd Van Donkelaar Our Cover Story: A new hoya species from Palawan, Philippine Islands. Hoya juannguoiana Kloppenburg Hoya juannguoiana BCloppenburg sp. nova, affinis Hoyae finlaysonii Wight (Contributions to the Botany of India 38. Robert Wight) 1834, sed plus foiiis, lax et curvatus non verticales et planus. Retinaculum differt. Type: Kloppenburg #2001 ex hort. Fresno, CA., USA. Collected in 1994 at St. Paul’s Underground River, (Sabang Bay area), Palawan, Philippines. Growing over large rock boulder near curving wooden stair case leading to trail between St. Paul’s and Sabang Bay. Diagnosis: Hoya juannguoiana Kloppenburg new species, near Hoya finlaysonii Wight (Contributions to the Botany of India 38, 1834, Robert Wight) but with more leaves, which are lax and cupped not held vertically and flat. The retinaculum is different. Description: A strong dangling, creeping glabrous vine with opposite leaves, obovate to ovate-lanceolate, base cuneate, edges entire, with apiculate acute apex. Blades usually somewhat cupped, waxy medium green upper surface, lighter beneath. Pinnate venation 3 veins on either side of midrib not readily visible (in contrast to those of Hoya finlaysonii Wight) 4 'A” - 6” long 2- 2 ‘A” widest near the middle or beyond. Nodal length variable, stems corky, tan colored, new growth rose bronze, the whole plant glabrous. Milky sap. This hoya is named for Ju Ann Guo, born in Beijing, China. Now working and living in the San Francisco Bay Area of California. She is a graduate of English literature. She speaks five Chinese dialects including Mandarin and excellent English. This lady has a deep interest in plants specializing in species which attract humming birds and butterflies. I am pleased to name the following hoya species in her honor. 1 Pedicle: strict, terete, 2.0 cm. long. Calyx; small with short triangular sepals overlap 14 at base, widest 0.15 cm. and 0.10 cm. long, apex to corolla sinus 0.15 cm.; ligules present. Ovaries; short, stubby, lime green, 0.1 1 cm base bare, 0.17 cm. tall. Corolla: creamy yellow with rose-bronze on lobe apex areas, reflexed, glabrous except a very finely puberulous on inner surface otherwise glossy; center domed and thickened under the corona. sinus to sinus sinus to center widest apex to sinus apex to center 0.40 cm. 0.35 cm. 0.50 cm. 0.55 cm. 0.84 cm. flattened, so corolla diameter is 1.68 cm. Corona; white, inner lobes dentate but nearly abortive they are so thin and short, not reaching the center, dorsal surface flat to slightly raised outward, edges raised with very low inconspicuous keel down the center. Channeled below to sinus area, finely and beautifully sulcate. Anther wings close up prominent , yellow, double walled. Column 0.05 cm. tall. apex to apex 0.36 cm. apex to center 0.40 cm. widest 0.20 cm. anther wing to aw. 0.25 cm. retinaculum to ret. 0.10 cm. retinaculum to center 0. 1 1 cm. retinaculum to end 0.1 1 cm. PoUinarium: long with a long narrow retinaculum. Pollinia: pellucid edge extends over the top but not all the way down the edge, a clear definite vacuole is present. length 0.60 mm. widest 0.19 mm. Retinaculum: Dark rusty brown with pointer head, nearly parallel sides and short extensions. length shoulder hips waist extensions 0.26 mm including short extensions. 0.07 mm. 0.07 mm. 0.07 mm. 0.02 mm. Translators: attached well below the middle. length 0.14 mm. structured, straight outer edge, depth 0.05 mm. Caudicles: bulb diameter 0.06 mm. clear with narrow tail Photomicrographs: Outside view of corolla and calyx enlarged about 8X. Note short, triangular; corona apex exceeds sinus slightly. Calyx lobes very short, triangular sepals Inside view of the corolla enlarged about 8X, this surface is waxy and glabrous with a raised thickened column in the center. Top view of the corolla and corona. Corolla is revolute with apex ends reflexed. Scale outer apex exceeds the sinus slightly. 3 Calyx side view enlarged about 8X. Very short, stubby, triangular sepals from an enlarged granulose base. Ovaries actually pale green also stubby and broad based. Calyx top view enlarged about 16X, overlap about V4 at base with ligules present. Top view of the corona and corolla enlarged about 8X. Note the short inner coronal lobes, nearly abortive, not reaching the center with outer apices slightly exceeding the corolla sinuses. Bottom view of the corona enlarged about 8X. Grooved with this surface of the scale lobed, finely sulcate, anther wings with double sides. 4 Scale side view enlarged about 16X. Flat on top with a sharp edge and slight keel in center, outer apex rounded. Anther wing deeply scythe shaped, inner lobe short, with anthers exceeding. The pollinarium here is enlarged about 165X. The polirmia are very long as is the retinaculum. Caudicles and translators enter low down on the side of the retinaculum. Pollinia length widest Translators length depth width ca. Caudicle bulb diam. Retinaculum total length shoulder waist hip extensions 0.60 mm. 0.18 mm. 0.17 mm. 0.04 mm. 0.01 mm. 0.07 mm. 0.25 mm. 0.07 mm. 0.06 mm. 0.07mm. 0.02 mm. This retinaculum has a pointed head with almost parallel sides, actually with 3-4 oval extensions along the sides. Extensions are extremely short. 5 6 The following new species is named for Dr. Art Whistler. It gives me great pleasure to name this new hoya for this well renowned worker in the field of plant science who has concentrated on the flora of a number of Pacific Islands including the Samoan Islands, the origin of this new Hoya species. ABOUT THE AUTHOR Art Whistler was bom near Death Valley, California, to which he attributes his early love of plants and vegetation. After receiving a B.A. and an M.A. at the University of California, he served three years with the U.S. Peace Corps m Western Samoa, where he taught high school biology. Resuming his schooling, he received a Ph.D. in Botany at the University of Hawaii in 1979. Since then he has made numerous research trips to Samoa, Tonga, the Cook Islands, Tahiti, Guam, and elsewhere in the Pacific, working on the medicinal plants, ethnobotany, and flora of the islands. Currently he is a botanical consultant working on various projects in the islands out of his consulting company. Isle Botanica, based in Honolulu. He is also a Research AiEhate at the Bishop Museum and an adjunct Associate Professor at the Lyon Arboretum in Honolulu. He has published several books on the botany of the Pacific islands, including Flowers of the Pacific Island Seashore (1992), Polynesian Herbal Medicine (1992), Tongan Herbal Medicine (1992), Wayside Plants of the Islands (1985), Samoan Herbal Medicine (1996), Tropical Ornamentals (2000), and Plants in Samoan Culture (2001), and has written numerous scientific articles on medicinal plants, ethnobotany, and floristics of Polynesia. Future pubhcation plans include a book on Samoan rainforests, one on the flora of Samoa, and a third on trees of Polynesia. Hoya whistleri Kloppenburg Type description: Hoya whistleri Kloppenburg sp. nov. Hoya chlorantha Rechinger afifinis sed calycis ovatis triangularis non oblongis lanceolatis. CoroUae intus margine paulo incrassata minutisime et dense pubemlis, centrum glabris non omnis pubemla. PoUinarium maximum partem similis ut Hoyae sp. USDA 354238 et Hoyae limonica S. Moore. Holotypus: (BISH) Whistler #3139, collected on the Samoan island of Ta'u. This species is similar to Hoya chlorantha Rechinger but the calyx is ovate triangular not oblong lanceolate. The corolla inside has the margins thickened, minutely 7 and densely puberulous with the center glabrous not puberulous all over. The poUinarium is most similar to that of Hoya sp. USDA 354236 and Hoya limonica S. Moore. This is a vine with opposite, thick lanceolate leaves. The longest leaves are 5.5 - 10.5 cm. long, mostly with acuminate apices. The sap is milky white, flowers are waxy and large (flattened 2.4 cm. in diameter) pale green to white in color. Follicles are narrow with comose seeds. This species has been observed in lowland to montane forests, reportedly Ifom 10-600 M. elevation. Endemic. Photomicrographs from flowers sent to me by Ted Green, Kaaawa, Hawaii 2/3/95. Collected by Art Whistler on Ta'u Island, Samoa. Flower large, lime green color. Pedicel, calyx and ovaries side view enlarged about 8X. Pedicel curved 2.5 cm. long by 0.10 cm. in diameter, terete, glabrous with many longitudinal lenticels so surface is rough. Calyx cupped apically inwardly, receptacle enlarged knobby and granulose, rough with some pinkish tones. Inner surface glabrous. Sepals broad and short, ciliate 0.19 cm. long and 0.18 broadest, overlapped at the base 0.06 cm.; small dark ligules are present. Ovaries domed 0.17 cm. tall, base of pair 0.16 cm. 8 Top view of the calyx enlarged about 8X. The sepals are somewhat irregular, ciliate with small dark ligules at the bases (sinuses) Apex is tapered obtuse, broad bases and slight overlap. Inner (left) and outer (right) surfaces of the corolla enlarged about 8X. The outer surface is glabrous, inner pubescent except near the center, apices obtuse, corolla cut more than half way. Flower flattened 2.40 cm. in diameter. Sinus to sinus 0.71cm Sinus to apex 0.73 cm. Center to sinus 0.65 cm. Center to apex 1 .20 cm. Corolla inside enlarged about 8X, showing the small crown with lobes a long way from reaching the corolla sinuses. Inside surface pubescent around the outer edges but glabrous inwardly and with stellate hairs around the reddish collar area. 9 anther wings; central column t Top (left) and bottom (right) view of the corona enlarged about 8X. Dorsal surface cupped, smooth and glabrous, inner lobe short and dentate; not reaching the center. Outer lobes obtuse, anther wings narrow, ventrally grooved by curved under sides of the scales but only to the ends of the lick (0.20 cm. in diameter) 0.12 cm. tall; red colored. Apex to apex Apex to center Widest Anther wing to aw. Retinaculum to ret. Ret. to center Ret to aw. Pollinarium 0.30 cm. 0.34 cm. 0.20 cm. 0.21 cm. 0.10 cm. 0.09 cm. 0.11 cm. enlarged about 83X. The translators are short supporting rather small caudicles. The retinaculum is large and has wide shoulders with the translator and caudicles entering above the hips. Pollinia 0.59 mm. long; widest 0.22 mm., both ends are rounded, pellucid outer edge extends all the way down the pollinium side, vacuole inward from here starts below the outer apex. Translator Caudicle Retinaculum Shoulders Waist 0.09 mm. long ca. 0.03 mm deep, ca. 0.02 mm. in diameter. 0.25 mm. long including extensions. 0.18 mm. broad. 0.06 mm. wide. Hips and extensions very short. i i Correction; In the previous issue of Fraterna Volume 14/4 the location of the Holotype sheet was omitted. It should read as follows: Hoya gildingii Kloppenburg sp. nov. Section Physostelma (Wight) Blume, affinis Hoya epedimculatae Schlechter sed coronae folia superne clever similis non acuta et retinaculum magnum non minuto. Typus 97009 ex hort. (UC) Eva Karina Wiberg, Borlange, Sweden. From Mt. Kota Kinabalu, Sabah Malaysia (Bukit Tapai Trail) 1995. 10 I Additional Correction: Torill Nyhuus informed me: "The two pictures of Hoya gildingii were taken by Eva- Karin Wiberg— not by me. The picture (page 3, Fratema Vol. 14, #4), top left is a picture of another species", (It is easy in hindsight to see the difference in the foliage— forgive me!)-Ed. All addition to the DNA article in Fraterna^ VoL 14 #4. Anne-Marie Leniay anne-marie.lemay@umontreai.ca Departement de sciences biologiques Universite de Montreal C.P. 6128, Succursale centre-ville Pavilion Marie- Victorin Montreal (Quebec) H3C 3J7 11 Canada TO SOLVE A PROBLEM: A MIST SYSTEM by Ted Green Where I live in Hawaii, at sea-level, the temperature very seldom gets down to 59°F (15°C) or over 92° (33°C). This range is very good for most Hoyas but those from higher elevations fail. That is why I seldom collect from above 5,000 ft. (I estimate that 5,000 ft. is about equal to my latitude here). There is a whole group of Hoyas that grow where the temperature is continually cool - 45° to 70°; such as H. engleriana, H. siamica, H. fusca, H. thomsonii, H. gildingii, etc. I can’t provide that kind of an environment. I noticed in Sweden, where most of the plants are kept in window sills, this condition can be approximated by the down-current cool air from the window pane and is probably the reason why so many growers there can grow and flower the things that I can’t. I have been envious even to the point of considering the installation of an air conditioning system. As an alternative to an expensive air condition system, I have tried something different - a mist system - to break or lower the temperature. My system is very inexpensive both in installation and operating costs (about $200 for the materials of installation and my own labor) and in operation, minimal with about a gallon of water used at each watering. My system turns on for only 1 minute at 1200 hours and 1600 hours each day. I have installed the mist system in a small greenhouse that is actually open to the breezes, and with a gravel floor the excess water can drain away. Even as it is, with only 2 minutes of watering a day, some of the plants sit in a basin of water. According to a thermometer, which is out of the way of the mist, the temperature does not drop much but the wetting of the leaves seems to have a great beneficial effect on the physiology of the plant. Not continually wet but just twice a day for the breeze dries the leaves in-between each misting. It is working for I now have growth where I didn’t have before. The plants have a new lease on life. For equipment I have chosen the best this time, for the first system I installed had heads that continually clogged up and within 3 months were absolutely useless. I now have non-fouling, adjustable, mist heads that project a 4ft. in diameter spray and with the breeze wafting through the house, this distance is usually extended to 6ft. You don’t want to be standing close when it turns on! 12 r I have finally accomplished what I set out to do - grow and flower the higher elevation, cooler growing hoyas. Ones that I have left behind, uncoUected before and then dreamed about. Ted Green Green: Plant Research Kaaawa, Hawaii 96730 Controller, DIG, 4 station, solid state. Filter/remote control valve/pressure reducing assembly, RB XC2-075 (3/4”) Spray/mist head, DRAM ‘A” P 13 — Propagation — From Stem Cuttings Hoyas propagate easily from cuttings. It is possible, however, to fail to get a cutting to root. A few suggestions may be helpful. Let's start with water as a rooting media. Fill a wide-mouth jar with water. Cover the top with foil to keep out the light and hold the cuttings upright. Make short cuttings, 6" or so in length. Long cuttings lose moisture from leaves and stem by evaporation and transpiration (evapotranspiration) and may wilt before rooting takes over the absorption function. Even shorter cuttings are adequate. Cut long pieces into 2 or more smaller ones. Remove leaves from one or two nodes so at least one node minus its leaves will be submerged in water. It is in the nodal areas where the growth hormones are concentrated and from which roots will emerge most readily. Insert the cuttings through small holes punched into the top foil covering and into the water below. Keep in a well- lighted warm, humid area if possible. The addition of a light dusting of root hormone to the cut end, or a drop or two of vitamin B-1 solution may hasten rooting. Do not chill the water or the plant. 72° f should be ideal, but as long as the humidity is kept high, even higher temperatures are OK. If the cutting is wilted or humidity is naturally low, cover the top of the cutting and jar loosely with a poly bag. It should be noted that a mass of white roots will soon form. If you plan to pot-up such cuttings, you may find that the roots are brittle and do not separate easily. It is probably best to switch them in the early stages of root development. More solid media: Hoyas can be rooted in sponge rock, sphagnum moss, fine bark chips, loose potting soil or other moisture holding media. It is necessary to keep the medium moist but not sopping wet. The media should be loose enough to provide moisture and good drainage. Be sure the medium and container are sterile! Here again a rooting hormone or vitamin B- 1 will aid rooting. Hormones are not essential, however. So don't let this stop you from rooting new cuttings. Again always try to have a node buried if possible. You want to cut the evapotranspiration to a minimum until rooting begins in a day or two. Hints: (1) Keep cuttings short. (2) Try cuttings in more than one medium if available. (3) Try laying cuts of small species horizontally with a node or two covered, or even at an acute angle. (4) Make fresh clean cuts for applying root hormone powder and tap off the excess. (5) Bottom heat of 72° f will hasten rooting. (6) Mist cuttings often to keep the humidity high. (7) Place pots in a group close together to increase humidity. (8) Place pots on a bed of gravel or other water holding media. This will also keep the humidity around the cuttings high. Above all firm up the potting media around the cuttings by using your thumbs! Continuous mist systems: with very loose materials i.e. sponge rock, loose coral etc. a continuous or intermittent misting wUl keep the cuttings continuously damp, and will promote rooting. All excess moisture must drain away. It takes some preparation to devise this set up but it is almost fool proof In a way, this is similar to the water method. 14 Continuous mist systems: with very loose materials i.e. sponge rock, loose coral etc. a continuous or intermittent misting will keep the cuttings continuously damp, and will promote rooting. All excess moisture must drain away. It takes some preparation to devise this set up but it is almost fool proof. In a way, this is similar to the water method. Small-leaved hoya cuttings are handled differently than the large leaved types, and the intermediate types fall somewhere in between. For the wee ones 4, 5 or even 10 or more nodes may make a good cutting and still be relatively short. With the large leaved species a single node makes an adequate cutting. In this latter instance the node with the leaf is pushed into the medium to just cover the node leaving the leaf blade in the open air. Here is where setting the cut at an angle aids doing it correctly. Two final notes: remember which end is up and which is down. The growing end does not like to be buried. It may root but new growth will be slowed until the cutting has the time to re- orient itself. Finally, as long as you can see green in a leaf or even a green stem devoid of leaves, you have a chance of being successful. Do not give up. I have waited as long as 3 years for a rare cutting to put on any new growth at all. Under good conditions roots will form quickly in 1 -3 days, but don't look to see what is happening and don't bump or make the stem move. Leave it in the light and in a protected place. Ordinarily, in 2-3 weeks you could expect to see the begirmings of new growth. Cuttings received (in the mail) may be dehydrated or stressed, they may benefit from a soaking for one or more hours in luke warm water. Adding sugar helps. How much sugar? Just pour some in the sink. Maybe a quarter of a cup to 2 gallons of water. Even adding a few drops of Vitamin B-1 won't hurt. The process moistens the cuttings and gives them a better chance to root. Leaves from hoyas will root and may eventually produce a shoot and new plant. Here a shoot-stimulating hormone is invaluable. I have been successful in grown plants about 80% of the leaves sent me for identification from overseas sources. Adventitious buds must first form to produce a shoot and new leaves. This seldom ever happens unless stimulated by a shoot hormone. I believe, however, that with some manipulation and scarring of the callused area and the addition of a shoot growth hormone, growth from leaves is probable. From Seeds If you are lucky enough to live where hoyas will produce pods, you can collect the seeds and sow them. Mature fresh seeds germinate easily on damp media. A fine textured media is best. Use a bed of fine peat moss, clipped sphagnum or fine potting soil. Synthetics such as blotting papers, burlap or fine tissue are also good. The best of these will pull free from the germinated seedling when you are ready to separate and pot up the individual plants. Hoya seeds lose their viability quickly. The fresher the seeds the better the chance of germination. Germination is rapid. Within a week, you should see some green showing in the damp media. Soon thereafter, each seed will sprout and two seed leaves will arise on a short stem, (they are dicotyledinous). The 15 greatest danger other than becoming dry is "damp off caused by fungal organisms. It is most prevalent in young seedlings. They topple over and die just after emerging from the media. This stage known as “post-emergence damping off’. An earlier attack, “pre- emergence damping off’ may also occur when seedlings are attacked before they push up through the media, but this occurs less often. It is a good idea to spray ahead of time with a systemic fungicide, such as Bordeaux powder (not an oil-based material) or other copper water-soluble based material. Be sure to mix the spray according to the label. Of course, snails and slugs in a greenhouse can wipe out a tray of seedlings in one night! Keep your seedlings moist and warm, and, once germinated, in good light. Most of all, ^ not fertilize cuttings or seedlings until they are producing good strong growth. More cuttings and seedlings have been burned back or killed by fertilizer than by none at all. The rooting media will give you all the needed nutrients as the organic matter breaks down. Sponge rock and water are exceptions as they contain little or no plant nutrients. About 90 days after sowing, the seeds should be ready for transplanting. The seedlings, however, should be well rooted and showing several pairs of true leaves. In many cases the seedlings will exhibit variations in size and vigor. Pot up the strongest ones in individual pots and repot the weaker in community pots. This will give the slower ones more time to develop. In some instances a few will be too weak to grow properly and should be discarded. Always keep an eye out for mutants and unusual seedlings. These may develop into desirable new varieties. By Dale Kloppenburg. Request for members to submit articles for publication We have received several request for more basic hoya articles. Many of you must have some experiences with making cuttings, experimenting with pots or potting mixes, displaying plants, winter or summer care and other subjects you can share with other readers. Please send your article for publication to: Dale Kloppenburg, 6427 N. Fruit ave., Fresno, CA 93711 or e-mail to: rdk03@cvip.net $ 16 BIRD TRACKS From: Robin Director Rosemary Peterson 6262 Kildee Street Long Beach, CA 90808 (562) 425-4765 Attention all !HA members! Did you take time to get involved in your association? Did you join a robin and meet nice people, exchange ideas, learn new things about hoyas, exchange cuttings, increase your collection and have fun doing it ? If not be brave and do so now 1 Give a membership of IHA to a friend, a plant enthusiast, or a family member, maybe best of all a young person. Sponsor a photo. .Above all, enjoy life! Robin #1. Margie, OR. Feb 2001. Have big fans in greenhouse now, and I think like the big fans in orchards that the air circulation is enough to keep the plants from freezing. The warmer greenhouse has lights on at night, plus heat trays that hoya pots sit on heat cables and then PVC frames over them is covered with plastic. With electric costs going up everything will be done to save on heating costs this next year. I have a new digital camera and hope to get photos put on CD this year. My hoyas root quickest for me in coconut peat and perlite mix. They sit on top of a hot water heater It is one of those square ones about the same height as a counter top. It has always been my best place to start things. I feel the room temperature and the bottom heat has a lot to do with success. Robin #1. Rosemary, CA. April 2001. I have one plant getting ready for its first blooms of the season. Its my little H. serpens. Most of the hoyas are starting new growth and if it would just warm up a bit, they would be much happier. H. serpens bloom.ed (Aug. 1999) and has to be seen to be believed. It drapes right across the opening of the patio. Robin #1. Mary, OK. March 2001. My hoyas look pretty good. I’ve lost one favorite that I got from Jean Spirling in Chicago a number of years ago. Sad about it because neither of us could identify it. I don’t think it liked this hot dry Oklahoma summer we had, same for Hoya linearis. Since I summer the hoyas outside they have to be tough to endure. If I ever get another linearis I will keep it indoors in the air-conditioning. I’ll pamper the next one. Robin #1. Harriette, CA. March 2001. I hope you can make it down to the San Diego Hoya Exotic Plant and Group meetings. The next one should be a good slide show, an exotic collecting trip even if mostly interesting Palms. (July 1, 2001) Robin #3 Anja. My favorite Hoyas ? Well- everyone that decides to develop flowers for me... To be honest; I really enjoy the smell of Hoya lacunosa and the great appearance of Hoya multiflora. When I look at the hoya literature and at the fantastic photos- well there are so many, many lovely hoyas around, I can hardly say “this is the one”. I love them all. I adore, for example the flowers of H. kerrii, H. meliflua H obovata, H, fraterna, and of course the great ones like H. imperialis, H macgiilivaryii etc. I bought my first “Wax Flower” at a garden shop. Now I have 50 different hoyas, something I could never imagine when I started with H. bella in 1993. ^OYA PHOTO GALLEl^ Photos by Ann Wayman The Color Photos on page 19 Top: Hoya naumanii Schlechter, was named in 1908. It is a species from the Solomon Islands (origin was the island of Bougainville now part of New Guinea) found in coastal forests. This is a beautiful waxy flowered Hoya with a nice large waxy deep green foliage on a vigorous plant. When I was visiting Geoff Dennis we found this species sprawling the ground below a trail in the Honiara Botanical garden on Guadalcanal. Geoff pointed out a Hoya australis growing just opposite this plant on the upper side of the trail. It was easy to see the differences in these species even when they are not in bloom. Center: Hoya cebu merrillii Schlechter. This is a Philippine hoya species with deep green waxy foliage. The clone shown here came from the island of Cebu and has large globose clusters of yellow floweres. This species makes an excellent pot of hanging basket plant; and one that is easy to grow and flower. This species can be distinguished from Hoya quinquinervia Warburg in one way by its outer coronal lobes which are sloped upward. Leaves of this species are broad and palmately veined, usually with 3 but often 5 rising basal nerves. A compact, well foliaged plant, adds beauty to any collection. { Bottom left: Hoya Loyceandrewsiana Green. A truly spectacular leaved species that has globose clusters of 50 or more pale yellow flowers. The flowers have a sweet pleasant odor. This is a big bold plant at maturity, always showy even when not in bloom. It most likely originated from Borneo, but we are not for sure as to its origin. Bottom Center: Hoya pruinosa Miquel. Synonymous with Hoya curtisii King and Gamble. A very small frosted leaved species really suited to terrarium culture. It appears the clone we are now growing was collected in 1904 at St. Paul's Bay, Palawan Island, Philippines. It was originally described from Malaya and Dr. Rintz said it was endemic to Malaya and only found at Taiping, Perak. This small plant has big flowers orange-yellow, with flared back corollas and prominent coronas. It is a true miniature, taking up very little space. Bottom Right: Hoya dennisii Forster and Liddle. This one is an enigma for me since what we are showing here does not conform to the drawings in the type description made by David Liddle. Our flowers have sharp edged coronal lobes whereas the drawing shows a more broad flat scale. At any rate this is a beautiful flossy green leaved plant with deep purple-red cupped flowers, like red Christmas bells. This species was named for the late Geoff Dennis to whom I referred to under Hoya naumanii above. 18 HOYA PHOTO GALLERY 19 GREEN; PLANT RESEARCH P.O. BOX 597, KAMWA, HAWAII 96730 Web address: rare-hoyas.com I HAVE INTRODUCED OVER 1/3 OF ALL HOYAS NOW IN THE TRADE;WITH NEW ONES EVERY YEAR. SEND FOR THE ASCLEPIAD LIST OVER 200 HOYA AND DISCHIDIA SPECIES AND VARIETIES. TED GREEN San Diego Exotic Plant & Hoya Group Held quarterly at the Quail Botanic Gardens in Encinitas, California For more information about the 2001 meeting dates: Contact HARRIETTE SCHAPIRO AT: (858) 273-4267 OR EMAIL: schapir@mail.sdsu.edu BOOKS ON HOYAS, CACTUS, AND OTHER SUCCULENT PLANTS Send for free 38-page catalog featuring 500 books/items on hoyas, cacti, succulents, palms, cycads, bromeliads, ferns, sansevierias, epiphyllums. South African, desert, more. Largest Cactus Bookshop in the world! We ship anywhere in the world. Rainbow Gardens Bookshop 1444 E. Taylor St. Dept. IHA-02 Vista, CA 92084-3308, USA Phone: 760-758-4290 Fax: 760-945-8934 E-mail: orders@rainbowgardensbookshop.com Visa/Mastercard welcome We ship worldwide! See our entire bookshop catalog on the web: www.rainbowgardensbookshop.com HGA The Association for plant and flower people who grow in hobby greenhouses and windows! Quarterly Magazine Growing & Maintenance Help & Advice Hobby Greenhouse Association 8 Glen Terrace, Bedford, MA 01730-2048 Dues: USA $22 {Canada and Mexico, $24 US funds/MO) {$25 Overseas, US funds/MO) Sample magazine $3.50 Directory of Greenhouse Manufacturers $2.50 HELP SPONSOR A PHOTO CAMPAIGN How do you like the photos that are put into each issue of FRATERNA these days! Would you like to see more? We certainly would if we could afford it, but let’s face it — one of the most expensive things about putting out an issue of FRATERNA is having all those color photos in each issue. To offset those costs and allow more pictures to be added, we are actively asking our members to help sponsor a photo. This was very popular a couple of years ago, but in the last 18-24 months, we’ve seen a lack of interest -—probably because we didn’t promote it enough. Let’s rectify this! Send in your non-profit donation of $25.00-$50.00-$100.00 today! To: Membership Secretary, IHA, 1444 E. Taylor St., Vista, CA 92084-3308, USA. Through your generous support, everyone will benefit! Thank you. Dealer Catalog Requests The IHA office does not have dealer catalog available. Please address your catalog requests t the individual dealers, or write to our Board Membe Vic Sencindiver, who will have a listing of mail orde dealers available. Please send a self addressed stamped envelope (overseas requests, please sen one International Postal Reply Coupon). Vic's addres is 908 S. Beach Ave., Beach Haven, NJ 08008-152 U.S.A. In some instances there may be a charge fo these catalogs.. Bob Smoley’s Gardenworld Dept. IHA-02 4038 WATTERS LANE GIBSONIA, PA. 15044 Tel. 724-443-6770 Fax. 724-449-6219 E-mail bsmoley@stargate.net WE OFFER THE FOLLOWING PLUS MANY SPECIES NOT LISTED ^Sansevierias...l50 species ^Hoya A Dischidia...l70 species ^Epiphyllums....l60 species ^Haworthia....l65 species <^Rebutia -Sulcorebutia “ Lobivia....l50 species ^Rhipsalis....60 species ^Stapeliads....75 species Euphorbias - Caudiciforms - Gasterias - Aloes - Agaves - Opuntias - Jungle Cactus “■ Exotic Foliage -- Winter hardy cactus Send for free catalog NOW !! Over 2,500 species listed in our 75 page catalog Web address; www.bobsmoleys.com Praterma luester t. mert library 2 8 2002 NEW YORK ^ tan (CAL GARDEfi Official Bulletin Of The Volume 1 5 #2 INTERNATIONAL HOYA ASSOCIATION April - June 2002 Hoya lasiantha Korthals ex Mlquel Photo by Eva-Karin Wiberg I INTERNATIONAL HOYA ASSOCIATION Administrative Office; 1444 E. Taylor St. Vista, CA 92084 Phone: (760) 758-4290 Fax; (760) 945-8934 E-Mail: RBGdns@aol.com A Non-Profit Organization Bulletin published quarterly. ISSN 10055-4564 web page: www. international-hoya.org I.H.A. Affiliates 2002 rates for a 1 year membership (USA), which includes our quarterly publication are $18.00 per year. Outside the United States: U.S. $25.00 per year, sent via airmail. Officers And Editors President Vice President Secretary/T reasurer Editor Assistant Editor & Web Administrator Dr. Harriette Schapiro Chuck Everson Ann Way man Dale Kloppenburg Edward Gilding San Diego Exotic Pant and Hoya Group, San Diego, CA. Svenska Hoya Salskapet, Borlange, Sweden Editorial Policy Errors of fact may occur from time to time in "Fratema". It is the policy of the IHA to publish corrections of fact, but will not comment on matters of opinion expressed in other publications. Fraterna Board Of Directors Dale Kloppenburg Ted Green Dr. Vic Sencindiver Rosemary Peterson William J. Wayman Jerry Williams Correspondence Dr. Vic Sencindiver Secretary 908 S. Beach Ave. Beach Haven, NJ. E-mail: jsencin@ worldnet.att.net 08008 Round Robin: Rosemary Peterson 6262 E. Killdee St. Long Beach, CA. 90808 e-mail : r sm ary940@aol . com Membership Sec’y. Jerry Williams Slide Librarian 1444 E. Taylor St. Vista, CA. 92084 E-mail: rbgdns@aol.com Honorary Board Members Fraterna is the official quarterly bulletin published by the International Hoya Association. The administrative office is located at; 1444 E. Taylor St., Vista, CA. 92084-3308. Opinions stated in articles and editorials of Fraterna do not necessarily represent opinions of other I.H.A. members, the Board of Directors, or its officers. All articles submitted to Fraterna for possible publication may be edited for grammar, form and content. All material in Fraterna may be reprinted by non-profit organizations (unless permission is expressly denied in a note accompanying the material) provided that proper credit is given to I.H.A. Fraterna and the author, and one copy of the publication containing the reprint be sent to the I.H.A. administrative office. No reproduction in whole or part by any other organization, publication or individual, is permitted except by permission of the editor. Representing Europe: Eva-Karin Wiberg Editor's e-mail address: rdk03@cvip.net Representing S.W. U.S.: Mary Jo Gussett Representing Central Europe: Ruurd Van Donkelaar The President's Message by Harriette Schapiro It has been a while since I talked to all of you, but it has been a very odd year. I have had several medical problems that have complicated my life. I am now very allergic to some pollens and have ended up with asthma! (At my age!?) I seem to have most things under control now and even though the acacias are still dropping pollen aU over the city, I seem to be managing. This is not really the way I expected to enjoy my retirement years. For those of you new to the International Hoya Association, I have a Ph.D. in Biochemistry and am an Emerita Professor of Biology from San Diego State University. I taught at San Diego State for 24 years and retired in 1990. No, I am not a Botanist, my specialty was a strange combination of Cellular and Human Physiology and taught those subjects and did research in Immunology and Immunochemistry. I have always been interested in plants, etc. When I bought my home here in San Diego, some of the first plants I grew in the yard were fuschias. Then the white flies moved in and I could not keep them healthy. Somewhere in that time, a friend gave me a hoya. I think it was one of the H. pubicalyx varieties. It grew and the white flies did not seem to bother it! That started my love of hoyas, especially after I saw it bloom for the first time. Time went on and a collection grew out of a single plant! I was hooked. In the fall of 1 989, 1 1 people met in my Hving room to discuss the possibility of getting together with other hoya fiiends and starting some sort of meetings. As of this year, 2002, The San Diego Hoya Group (which has gotten together with other plant people in the Southern Californian area) is now known as the San Diego Exotic Plant and Hoya Group. We meet 4 times a year with an average attendance of 50 people at each meeting. Some where in that very brief time line, I got involved with the IHA. I have made great friends, both locally and all over the world. It is amazing what happens when you get involved. I would love to learn how each and everyone of you discovered hoyas and how many of these plants we love have come to us from a cherished relative. I have just locally met several people who "inherited" their first plant from a mother or an aunt. Wouldn't it be fun to hear a few of these stories and to learn how more people grow their Hoyas. Some of the best photos of home grown hoyas I have seen have come from Sweden & Finland. Surely that is about as far from the natural habitat as you can imagine. Our IHA web site (www.intemational-hoya.org) has been updated and hopefully will be kept up to date. Financially, the IHA is doing well enough to not need a rate increase this year (unless postage goes much higher). Membership keeps slowly increasing and, to me, the quality of The Fratema keeps increasing. With your enthusiasm and articles on topics you are interested in, I hope we will keep growing. 1 Hoya nabawanensis Kloppenburg & Wiberg A new species from Borneo Hoya nabawanensis Kloppenburg & Wiberg sp. nov. Typus 2002 (UC), Section Otostemma. Collected by Eva-Karin Wiberg et. al. at Nabawan, Sabah, Malaysia ex hort Eva Karin Wiberg, Borlange, Sweden. Hoya lacunosa Blume alfinis sed, intus corollae lobus glabrous non velutino-vellosa, folio non lacunosa, coronae parvulus in penta-depressio, glabro, differt. Like Hoya lacunosa Blume but different, as the lobes of the corolla are glabrous, not velvety- villous (tube pubescent), with a very small corona in a pentagonal glabrous depression. The species was collected in a wet humid area, with small bushes and low growing vegetation. Floor was covered with sphagnum moss with some small trees. You had to watch your step not to step on orchids. Opposite leaved, fleshy, petioles curved to slightly bent, terete, 5-6 times shorter than the leaf blade, 1 cm. long, glabrous. Blades ovate to ovate-lanceolate apex acute to somewhat apiculate, flat to slightly curved down at the apex, deep green, under-sides slightly lighter in color; glabrous 6-10 cm. long by 2.5 - 4 cm. wide, pinnately veined about 4 on each side of the midrib at 45 degrees to it, midrib slightly raised on the upper side, edges entire, texture thick and leathery, sap milky white. Hoya nabawanensis Kloppenburg & Wiberg Photo by Eva-Karin Wiberg 2 Photomicrograph flowers of H. nabawanensis Kloppenburg & Wiberg sent by Eva-Karin Wiberg, Sweden, June, 2001: Peduncle 2 cm. long, glabrous, terete. Pedicel, calyx and ovaries enlarged about 8X. Pedicel curved 1.75 cm. long and 0.10 cm. in diameter glabrous, terete, uniform size. Calyx extremely diminutive. Ovaries upright, glabrous, narrow domed. Top view of (two) calyx enlarged about 16X. The sepals are really short and small in this species. 0.09 cm. at the widest and the diameter of calyx is only 0.09 cm. Sepal length is only 0.07 cm. Both surfaces are glabrous. Outside view of the corolla flattened. This surface is glabrous but punctations on the corolla lobes. The central column is very small and little thickened. Villous hairs are projection out from the edges on upper surface. 3 Top (inside) view of the eorolla flattened with ovaries still showing through the central collar. Note the entire corolla lobe is glabrous, the portion which is below on revolute flower. Center - apex Center - sinus Sinus to sinus Widest 0.43 cm. so diameter flattened is 0.86 cm. 0.22 cm. 0.29 cm. 0.27 cm. Top view of the natural flower (not flattened) with the small corona present. This surface is villous except for the turned under coronal lobes. The corona is so small that the scales outer lobes are nowhere near reaching the corolla sinuses. Corolla inner surface with the corona removed, enlarged about 8X. Note the glabrous pentagonal area in the central portion which would be under the corona, otherwise long villous hairs cover this exposed surface. 4 Bottom view of the corolla enlarged about 8X, showing how glabrous nearly the entire coronal lobes are in contrast to the villous remainder surface. View of the flower with the pedicel and calyx visible, enlarged about 8X. Corona view enlarged about 1 6X. Bottom (left) and top (right) inner lobes do not reach the coronal center, they are rather long and narrow, rounded. Outer lobes narrowing obtuse. The column on the bottom is w^ell developed with a surrounding cleft skirt. Side view of a coronal scale enlarged about 16X. The back is swayed; the inner lobe rounded, actually neither spatulate not dentate. This inner apex is slightly higher then the outer apex, whole surface is glabrous. There is a slight keel down the center of the scale dorsal surface. 5 Pollinarium enlarged about 165X. PoUinia are wide, translators long and distinctive and the retinaculum short. PoUinia length widest Retinaculum length head waist hips extensions Translator Length widest 0.28 mm. 0.12 mm. 0.17 mm. rounded with no distinct shoulder. 0.02 mm. ca. 0.04 mm. up to 0.03 mm. 0.15 mm. 0.13 mm. Caudicle bulb diameter 0.05 mm ca. Scanned leaves of Hoya nabawanensis. 6 Refer to Fraterna volume 4 #4:11 "DNA Comes to Hoyas" for a preamble to Anne- Marie's article below. Let’s hear from Hoyas about their story! By Anne-Marie Lemay In my previous article published in the December issue of Fraterna, I briefly presented my research project on the phylogeny of hoya. More precisely, I explained how I use DNA to determine the relationships among different hoya species and how these relationships can be represented in the form of a genealogy, or a phylogenetic tree. Let me now show you the results of my study: let’s hear about the history of Hoyas! With more than 300 species in the genus, it would have been unrealistic to reconstruct the entire family album of Hoya in the course of my graduate research. How to select a limited number of species among all these beautiful plants? A real torture! Fortunately (or unfortunately), the list of candidates was restricted by the species availability. R. D. Kloppenburg was kind enough to provide plant material for the species used in my study. I had a soft spot for special hoyas, selected for their unique characters, like the well-known “ Sweetheart Hoya ” (H. kerrii), the “ Shooting Star Hoya ” {H. multiflora) and the “ Miniature Wax Plant ” {H. bella). Otherwise, I tried to maximize the geographic distribution of species to determine whether phylogenetic relationships could be explained by geographical proximity. This information could explain how Hoyas have colonized the various regions of South-East Asia and Oceania. In total, 26 species were used for my project. The presented phylogeny illustrates the relationships among the selected Hoya species and three related species of Ceropegia and Fockea, required to “ root ” the phylogenetic tree. This tree should be read as a family tree, with closely-related plants being grouped together in the phylogeny. Primitive species {H. bella) are usually the first to branch off near the root whereas specialized plants {H. multiflora) are at the “ crown ” of the tree. To understand a phylogeny, you must keep in mind that the relationships are based on species similarity. The more features are shared between species, the more closely related they are. This is true for DNA, as well as morphological characters. I did not consider morphology for my project, because it requires a large number of characters (e. g. on leaves, flowers, pollen) to build a phylogeny. In other words, that could be a completely different project than mine (anyone interested?). Nevertheless, some distinctive morphological feature can provide clues on species relationships. As an example, let’s consider H. multiflora and H. cumingiana. Their striking similarity is obvious to the untrained eye: they both have flowers shaped like shooting stars. In the DNA phylogeny, these two species are close relatives, like two sisters. The same thing goes for the pair H. nicholsoniae and H. vitellinoides, sharing yellowish flowers. 7 In some other cases, appearances can be deceptive! For example, H. pentaphlebia, H. kerrii, H. obovata and some varieties of H. diver sifolia and H. crassipes are recognized for their very large and thick leaves. In the phylogeriy, all of these plants are grouped together, except for H. pentaphlebia which seems to be distantly related to the other four. This is a case of feature convergence, like the wings of bats and birds described in my previous article. It is hypothesized that H. pentaphlebia developed large and thick leaves independently from other Hoya species, maybe as a response to similar environmental pressures. Feature convergence could also be responsible to explain the position of H. merrillii, H. neo-ebudica, H. cinnamomifolia and H. polystachya in the phylogeny. They share the same parallel nervation, but the species are nonetheless dispersed throughout the phylogeny, except for H. cinnamomifolia and H. polystachya. Feature convergence is difficult to detect, if based on a few morphological characters. A complete study of Hoya morphology would be required to be more precise about the evolution of these species. On a different matter, it is worth pointing out that the specific association H. pentaphlebia, H. merrillii, H. verticillata, H. fmlaysonii and H. glabra on the same node of the tree does not imply that these hoyas are all sisters. Evolutionary biologists assume that phytogenies should be strictly bifurcating, that is to say that one ancestor could only give rise to two descendants. What my results indicate in that particular case is simply that DNA was not able to discriminate any of the five species. More data would be needed to resolve this group. Enough said about the phylogeny. What can I say about geography? Unfortunately, my study was not conclusive about the factors determining the geographical distribution of hoyas, probably because of the limited number of species considered in my research. The colonize pattern of hoyas in South-East Asia and Oceania still remains a mystery. End of the story? I hope not! A lot more species (and some not yet discovered) will be added to the family album. My contribution was to put a seed in the ground. The phylogenetic tree is still growing. I wish that other scientists will follow in my foot steps to one day retrace the entire evolutionary history of the Hoya genus. anne-marie.lemay(@umontreal.ca Departement de sciences biologiques, Universite de Montreal, C. P. 6128, Succursale Centre-ville, Montreal (Quebec) H3C 3J7, Canada Errata: Anne-Marie Lemay's article which appeared in Fraterna 14 Volume #4 October- December, 2001, was incorrectly titled "Je cherche encore un titre..." it should be titled "A Family Album of Hoyas". Ed. 8 w '(/5 C J0 0) O) OJ o o TO TO TO 05 0 .2- TO 1 TO ra m ILm o •a m o = xz TO m i— o w £ t TO 3 TO •4-f TO 0 0 05 TO TO > O m ® fc ~ 0 c 1 3 Ife TO ‘r ^ o 1 = '1^ o TO k. Si 0 O JQ = 3 O O O E O O Si a. X X j: X X X X X X X X i X X « 05 5 E ■£ = = o o « = o >, S c •g t *3 TO J2 O g ® TO C J5 E Q. c > ra r: TO _o 3 0) o 0 TO TO TO a ^.2 5k O TO a o 0) 0 ■g 'o c o = XXXX X X X xxxx 0 ’> X Photos by Ann Wayman The Color Photos on page 19 Top: Hoya calycina Schlechter. Previously pictured and described in Fraterna 1990/4. This species was first collected by Dr. Schlechter in the rainforest of the Kani Mts. of Northeastern New Guinea at an altitude of 1400 meters (about 4,200— feet rather high for the tropics) blooming in March 1908. It is a spectacular bloom, 1" or more in diameter with a sparkling white corolla and deep red under the corona. It is extremely fragrant, a honey scent. It has been confused with Hoya australis R. Brown and Hoya albiflora Zipp. Ex Blume. According to Paul Forster it has two subspecies and is widespread in Papua, New Guinea. Center: Hoya sp. BSI 1 (see West Coast Hoya Society newsletter, July- Aug 1988 with picture.) This hoya is an excellent bloomer, and fragrant too! Ann Wayman said it smells like boiling grape jam and Ted Green has always said it smells like Welch's grape juice. In any case it is a winner and easy to grow too. It is listed also as Hoya subcalva Burkill but does not seem to fit that species' original description because of its fine pubescent inner corolla lobes and broader coronal lobes. The BSI stands for British Solomon Islands, the identity of the area prior to World Warn. Bottom Left: Hoya Sp, Dav 816. I had to go to Ted Green for a comment on this one. "It is Hoya ariadna Decaisne, and I got it from the Department of Agriculture in Victoria, Australia years ago. It was collected by Beardsell on Kolohite Island, Western Solomon Islands." Bottom Center: Hoya pubicalyx cv. monstrose. Well, here we have a mutant form of a well known species. The foliage is so speckled with silvering as to look like someone mistakenly sprayed it. The leaves are almost gray rather than green. It is a compact succulent slow grower with deformed flowers. The outer coronal lobes are rounded off and many times there are only 4 instead of 5 lobes present. This has been sold under various names. I used to list it as a H carnosa mutans cv. "Spotted Gray". This one is really different, a true mutant. Bottom Right: Hoya Sp. IML 557 Sabah. Again I needed help from Ted Green. "According to David Liddle (Australia) this one is a 7mm. red flower, highly perfumed in loose umbels, leaves leathery, white speckling, broadly ovate markedly acuminate. " It evidently was collected in Sabah, Malaysia, the northern portion of Borneo. The IML stands for Iris M. Liddle, a designated numbering system used by the Liddle's at their nursery in Mareeba, Queensland, Australia. 18 Hoya Photo Gallery 19 - ■■■■■A" GREEN; PLANT RESEARCH RO. BOX 597, KAMWA, HAWAII 96730 Web address: rare-hoyas.com I HAVE INTRODUCED OVER 1/3 OF ALL HOYAS NOW IN THE TRADE;WITH NEW ONES EVERY YEAR. SEND FOR THE ASCLEPIAD LIST OVER 200 HOYA AND DISCHIDIA SPECIES AND VARIETIES. TED GREEN San Diego Exotic Plant & Hoya Group Held quarterly at the Quail Botanic Gardens in Encinitas, California For more information about the 2001 meeting dates: Contact HARRIETTE SCHAPIRO AT: (858) 273-4267 OR EMAIL: schapir@mail.sdsu.edu BOOKS ON HOYAS, CACTUS, AND OTHER SUCCULENT PLANTS Send for free 38-page catalog featuring 500 books/items on hoyas, cacti, succulents, palms, cycads, bromeliads, ferns, sansevierias, epiphyllums. South African, desert, more. Largest Cactus Bookshop in the world! We ship anywhere in the world. Rainbow Gardens Bookshop 1444 E. Taylor St. Dept. IHA-02 Vista, CA 92084-3308, USA Phone: 760-758-4290 Fax: 760-945-8934 E-mail: orders@rainbowgardensbookshop.com Visa/Mastercard welcome We ship worldwide! See our entire bookshop catalog on the web: www.rainbowgardensbookshop.com HGA The Association for plant and flower people who grow in hobby greenhouses and windows! Quarterly Magazine Growing & Maintenance Help & Advice Hobby Greenhouse Association 8 Glen Terrace, Bedford, MA 01730-2048 Dues: USA $22 {Canada and Mexico, $24 US funds/MO) {$25 Overseas, US funds/MO) Sample magazine $3.50 Directory of Greenhouse Manufacturers $2.50 HELP SPONSOR A PHOTO CAMPAIGN How do you like the photos that are put into each issue of FRATERNA these days! Would you like to see more? We certainly would if we could afford it, but let’s face it— one of the most expensive things about putting out an issue of FRATERNA is having all those color photos in each issue. To offset those costs and allow more pictures to be added, we are actively asking our members to help sponsor a photo. This was very popular a couple of years ago, but in the last 18-24 months, we’ve seen a lack of interest —probably because we didn’t promote it enough. Let’s rectify this! Send in your non-profit donation of $25.00-$50.00-$100.00 today! To: Membership Secretary, IHA, 1444 E. Taylor St., Vista, CA 92084-3308, USA. Through your generous support, everyone will benefit! Thank you. Dealer Catalog Requests The !HA office does not have dealer catalogs available. Please address your catalog requests to the individual dealers, or write to our Board Member Vic Sencindfver, who will have a listing of mail order dealers available. Please send a self addressed, stamped envelope (overseas requests, please send one International Postal Reply Coupon). Vic’s address is 908 S. Beach Ave., Beach Haven, NJ 08008-1520 U.S.A. In some instances there may be a charge for these catalogs.. Bob Smoley’s Gardenworld Dept. IHA-02 4038 WATTERS LANE GIBSONIA, PA. 15044 Tel. 724-443-6770 Fax. 724-449-6219 E-mail bsmoley@stargate.net WE OFFER THE FOLLOWING PLUS MANY SPECIES NOT LISTED <$>Sansevierias...l50 species ^Hoya A Dischidia...l70 species ^Epiphyllums....l60 species <$>Haworthia....l65 species ^Rebutia -Sulcorebutia ~ Lobivia....l50 species <$>Rhipsalis....60 species ’€>Stapeiiads....75 species Euphorbias - Caudiciforms - Gasterias ~ Aloes - Agaves - Opuntias - Jungle Cactus - Exotic Foliage - Winter hardy cactus Send for free catalog NOW II Over 2,500 species listed in our 75 page catalog Web address: www.bobsmoleys.com Official Bulletin Of The Volume 15 #3 INTERNATIONAL HOYA ASSOCIATION July - Sept. 2002 Hoya siariae Kloppenburg Sp. Nova Photo by Eva-Karin Wiberg lauEsnei^ t |j Sgp - BOTANICAL GARDEN INTERNATIONAL HOYA ASSOCIATION Administrative Office: 1444 E. Taylor St. Vista, CA 92084 Phone: (760) 758-4290 Fax: (760) 945-8934 E-Mail: RBGdns@aol.com A Non-Profit Organization Bulletin published quarterly. ISSN 10055-4564 web page: www. internationaI-hoya.org I.H.A. Affiliates 2002 rates for a 1 year membership (USA), which includes our quarterly publication are $18.00 per year. Outside the United States: U.S. $25.00 per year, sent via airmail. Officers And Editors President Vice President Secretary/T reasurer Editor Assistant Editor & Web Administrator Dr. Harriette Schapiro Chuck Everson Ann Wayman Dale Kloppenburg Edward Gilding San Diego Exotic Plant and Hoya Group, San Diego, CA. Svenska Hoya Salskapet, Borlange, Sweden Editorial Policy Errors of fact may occur from time to time in "Fraterna". It is the policy of the IHA to publish corrections of fact, but will not comment on matters of opinion expressed in other publications. Fraterna Board Of Directors Dale Kloppenburg Ted Green Dr. Vic Sencindiver Correspondence Secretary Round Robin: Rosemary Peterson William J. Wayman Jerry Williams Dr. Vic Sencindiver 908 S. Beach Ave. Beach Haven, NJ. 08008 Rosemary Peterson 6262 E. Killdee St. Long Beach, CA. 90808 e-mail: rsmary940@aol.com Membership Sec’y. Jerry Williams Slide Librarian 1 444 E. Taylor St. Vista, CA. 92084 e-mail: rbgdns@aol.com Honorary Board Members Representing Europe: Eva-Karin Weber Representing S.W. U.S.: Mary Jo Gussett Representing Central Europe: Ruurd Van Donkelaar Fraterna is the official quarterly bulletin published by the International Hoya Association. The administrative office is located at: 1444 E. Taylor St., Vista, CA. 92084-3308. Opinions stated in articles and editorials of Fraterna do not necessarily represent opinions of other I.H.A. members, the Board of Directors, or its officers. All articles submitted to Fraterna for possible publication may be edited for grammar, form and content. All material in Fraterna may be reprinted by non-profit organizations (unless permission is expressly denied in a note accompanying the material) provided that proper credit is given to I.H.A. Fraterna and the author, and one copy of the publication containing the reprint be sent to the I.H.A. administrative office. No reproduction in whole or part by any other organization, publication or individual, is permitted except by permission of the editor. Editor's e-mail address: rdk03@cvip.net Correspondence Secty: jsencin@worldnet.att.net Our Cover Story New Philippine Hoya Species Hoya siariae Kloppenburg, Sp. nova. This species was collected Tayabas, Quezon, Philippines. Type material from the UPLB plant breeding program. It is a woody vine, a creeping habit, with opposite lanceolate glabrous, deep green foliage ca. 14 cm. long x 3.5 cm. wide, tri-ply parallel veined, distinct on the upper surface less so below. Petioles heavy and long, 3.0 cm., diameter 0.09 cm. with deep groove on upper side. Intemodes 10 ~ 13 cm. rough surfaced, with many adventitious roots, nodes enlarged. Petioles strict, terete, ca. 5 cm. long, glabrous. I named this hoya in honor of (in her own words to me): Simeona Siar My full name is Simeona V. Siar, named after St. Simon Peter, however, everybody calls me by my nickname, Monina. I have a Ph.D. degree in Plant Breeding from the University of the Philippines, UP Los Banos. My work is as a researcher for the Institute of Plant Breeding, College of Agriculture UP Los Banos. I was awarded as one of the Ten Outstanding Young Scientists of the Philippines last year 2001 by the National Academy of Science and Technology. This is for my work on mussaenda, one of the Phil, outstanding endemic ornamental plants. I studied the heterostyly and incompatibility phenomenon in this genus and found out that the incompatibility observed in mussaenda is an interplay of the morphological, physiological and genetical factors all associated to the observed heterostyly in mussaenda. I am also an affiliate associate professor of the Institute of Biological Sciences of UPLB whereby I am handling genetics laboratory courses. Aside from mussaenda there are other several ornamental plants which I am handling like the foliage plants which includes aglaonemas, ti plants and dracaenas. Then, a very beautiful flower/plant captured my heart and now I am also focusing my work on another outstanding endemic plant — the hoya —— much of which the info and help came from Dale Kloppenburg. Thank you so much!!! Your letters and information that you've sent help keep up my interest in this plant. Hoya siariae Kloppenburg, Sp. nova. Type #200012 (CHAUP/ Hoya torricellensis Schlechter affinis sed ciliatus et longior calyx, flos parvus 1.48 cm. in diameter vs. 2.6 cm. differt. Coronae stamineae foliolis parvus. Pollinia brevissimus, retinaculum multus magnus. Speciem haec novam Dr. Simeona V, Siar dedicamus. Like Hoya toricellensis Schlechter but differs in the calyx being longer and edges are ciliate, flowers are smaller 1.48 cm. in diameter verses 2.6 cm. Staminal scales of the corona smaller. Pollinia much smaller, retinaculum much larger. Volume 15 #3 1 July — Sept. 2002 Side view of a closed flower showing the calyx and pedicel enlarged about 8X. Pedicel is glabrous, 2.6 cm. long, terete, 0.10 cm. in diameter, rusty pink colored. Calyx is ciliate otherwise glabrous, inside and out, calyx base is rugose. The sepals do not reach the corolla sinuses. Side view of the calyx and pedicel enlarged about 8X. The pedicel has a few scattered hairs, twisted and bent over. Calyx inside is waxy and glabrous. The two ovaries are short columnar 0.15 cm. tall and the base pair 0.10 cm. wide. Calyx top view enlarged about 8X. Sepals are a little overlapped at the base, 0.20 cm. long and 0.17 cm. at the widest, edges are ciliate, apex narrowly rounded subacute. Small ligules are present at each sinus area Top view of a flower enlarged about 8X. The corolla lobes do not reach the corolla sinuses. The corolla outside is glabrous, inside campanulate and pubescent. The lobes of the corolla are broad above the sinuses and the apex turns outward (slightly reflexed). Sinus - sinus 0.45 cm. Sinus - center 0.42 cm. Sinus - apex 0.45 cm. Apex - center 0.74 cm. The flower diameter flattened is 1 .48 cm. Widest 0.50 cm. Corona top view enlarged about 8X. The inner lobes are narrow and short blunt, outer lobes are narrowly long tapered, raised but turned down at the apical area. Apex - apex Apex - center Widest Anther wing - Retinaculum - Anther wing - aw. ret. center 0.25 cm. 0.30 cm. 0.09 cm. (very narrow). 0.14 cm and project outward. 0. 06 cm. 0.14 cm. Volume 15 #3 2 July — Sept. 2002 Bottom view of the corona enlarged about 8X. The lobes are grooved but open widely inwardly. The column is long 0.10 cm. tall, somewhat thickened. Pollinarium enlarged, the arrow in the lower right is 1 mm. long and with a base of 1/2 mm. The pellucid edge runs from the outer apex all the way down the outside. The Pollinia are broad and short, translators are short and caudicles small. The retinaculum is relatively large, with broad shoulders and waist areas. Pollinia length widest Retinaculum length shoulder waist hips extensions 0.39 mm. 0.29 mm 0.15 mm. 0.14 mm. 0.06 mm. 0.10 mm. 0.03 mm. Translators length 0.15 mm. depth 0.04 mm. Caudicle bulb. diameter 0.06 mm. Volume 15 #3 3 July — Sept. 2002 Foliage of this creeping species of Hoya siariae sent via e-mail from Monina V. Siar. New Hoya Species From Sipitang, Sabah, Malaysia (Borneo) Hoya sipitangensis Kloppenburg & Wiberg sp. nov. Typus #52002 (UC) Section Otostemma, collected by Eva-Karin Wiberg et al. at Sipitang, Sarawak, Malaysia ex hort. Eva-Karin Wiberg at Borlange, Sweden. Hoya lacimosa affinis, sed folio et flore ampins; corollae intus pubescens non velutino-villosa, differt. Like Hoya lacunosa but different, with larger foliage and flowers, inside corolla is pubescent not velvety-villous. Leaves opposite, green with a few silver spots, flowers green/yellow with red corona and white tips. Leaves and flowers larger than Hoya lacunosa Blume. Fragrant. This is a Section Otostemma . Volume 15 #3 4 July “ Sept. 2002 Hoya sitipangensis Above photo received via e-mail from Eva-Karin Wiberg, Borlange, Sweden. Flowers sent preserved with photomicrographs and data shown below. Fragrant. Side view of the pedicel, cal}^^ and ovaries enlarged about lOX. Pedicels are curved, short, glabrous or extremely finely puberulent, terete. 0.80 cm. long, 0.09 cm. in diameter. Pedicel and calyx with ovaries enlarged about 16X. The sepals are very short with little overlap; ligules present. Sepals 0.08 cm, long.; 0.26 cm. in diameter. Pedicels glabrous but granulose surface same for outside of calyx. Sepal edged incised and an occasional cilia. Ovaries rather long and narrow. Outside view of the calyx enlarged about 8X. This surface is glabrous. Tightly revolute naturally with acute apices. Collar is small and not much thickened. Venation plainly visible as corolla is relatively thin. Volume 15 #3 5 July — Sept. 2002 Flattened corolla inside view enlarged about 8X. This surface is pubescent. Center - apex 0.62 cm. Flower diameter flattened is 1 .24 cm. Apex - sinus 0.40 cm. Sinus - center 0.25 cm. Sinus - sinus 0.33 cm. Widest 0.34 cm. Side view of the flower enlarged about 8X. The crown sits well up off the corolla. Top view of the corona on the corolla enlarged about 8X. The coronal outer apices reach the corolla sinuses. The inner lobes do not reach the center and are spatulate. Scales are rather thin and somewhat translucent outer apex in narrowly rounded. Scales cupped on dorsal surface with keel down the center. Apex -apex 0.23 cm. Apex - center 0.26 cm. Widest 0.11cm. Volume 15 #3 6 July — Sept. 2002 -ife. Bottom view of the corona enlarged about 16X. Note: the scales are not channeled below, this is a Section Otostemma species the skirt is slit at the pentagonal comers. The column is long 0.09 cm. and the opening large 0.11 cm. Most parts are thin and translucent when observed after fluid preservation. Pollinarium enlarged about 1 65X. Pollinia length widest Retinaculum length head shoulders waist hips extensions Translator length depth width Caudical 0.07 mm. long 0.09 mm. 0.06 mm. without extensions domed 0.04 mm. 0.05 mm. 0.02 mm. 0.04 mm. 0.13 mm. 0,03 mm. 0.01 cm. ca. bulb diameter 0.04 mm. ca. Another view of the pollinarium same enlargement as above but focused on the retinaculum to show it more distinctly. Volume 15 #3 7 July — Sept. 2002 Hoya multiflora Blume (1823) found in Johor, West Malaysia. Written & photographed by K.F. Yap. Ayat is a lover of all living things great and small. He loves rescuing plants and animals in danger of disappearing from their natural habitats and later farming them out to nature lovers to care for. One fine day, in July last year, he and a few birding friends visited the foothills of Gunung Panti in search of birds and other excitement. I do not wish to steal Ayat’s thunder. It is best I let him tell you in his very own words what happened there. This is really his story: “On 2001-07-19, we started out early, crossed the Causeway, and ended up at a logging track in the Panti Forest Reserve, off Mersing Road, Johor State. The area in which we finally found ourselves was grossly logged with nary a tree left standing. A huge swathe of vegetation was mowed down to make way for the setting up of power cables and telephone lines. The devastated area was originally a tiny overgrown trail leading into a dense lowland forest, very popular with birdwatchers seeking to see fabulous bird species like trogons, broadbills and hombills. The hoya plants, at first mistaken for fig seedlings, were found on a small felled tree. It was growing out of a decomposing tree hole. There were 4 stems, but not all from the same plant. (Author’s note: probably one large plant and 3 seedlings.) The largest leafy stem had on it an old persistent peduncle (inflorescence stalk). The plants were fully exposed to and dying in the sun. I promptly rescued them from certain death. The larger plant produced 2 more umbels (inflorescences) in cultivation. The older umbel, carrying 1 1 blooms, flowered on 2001-09-06. The plant in bloom (see page 9) was photographed on 2001-09-10. All 4 plants were alive and well.” That ended Ayat’s narration but not quite the article. Nothing much is known about the distribution of Hoya multiflora (Asclepiadaceae) in West Malaysia. It was recorded by Henderson (1959) as having been found on forest trees in the lowlands and in the hills. Rintz (1978) stated that it was common but not abundant throughout the peninsula and most frequently encountered on ridges between 500 - 900m elevation. There was no mention of even a single location in West Malaysia. This is the information we have extant on the distribution of H. multiflora in Peninsular Malaysia. Most of the horticultural plants available in Singapore were imported probably from neighboring Indonesia & Thailand and propagated, I believe, from clones originated from those countries. We are now happy to place on record the existence of H. multiflora in the State of Johor, West Malaysia. Volume 15 #3 8 July — Sept. 2002 Literature cited: Henderson, M. R. 1959. Malayan Wild Flowers (Dicotyledon), p. 297. Rintz, R. E. 1978. The Peninsular Species of Hoya (Asclepiadaceae), Malay. Nat. J. 30(3/4), 467-522. The Wonderful World of Hoyas by P. V. Sencindiver, M.D. Hoya is a genus of plants that belong to the milkweed family, Asclepiadaceae. The family occurs in the temperate regions of the world. The genus Hoya was named for Mr. Thomas Hoy, a cultivator of wide renown who worked for the Duke of Northumberland. Hoyas largely are vines but some species are more like bushes than vines. For the most part they are epiphytes. Volume 15 #3 9 July — Sept. 2002 Most hoyas have thick leaves and can be considered succulent in nature. They have from very small flowers, barely visible, to huge flowers over three inches across. This variation in flower size carries through to the leaf size. One grower says that some are so large that they should be sold by the pound! Until recently there were only a small few Hoya species available for the plant lover to enjoy. Within the past 20 years, interest in this genus has led to a flurry of collecting and hybridizing. This is a group of plants that are beautiful and exotic. Even when not in bloom, the well-cared for plants exhibit beautiful foliage; each species different in color, texture, shape and markings. All hoya flowers are a study in perfection; star-like in appearance with five petals fused at the base and a gorgeous crown that sits atop the flower like a queens' tiara. They appear to be molded in porcelain and sculptured in wax. Most have a lovely fragrance. The inflorescence on most hoyas consist of 20 to 30 flowers per cluster. While some species will have as many as 50 or 60 flowers, (a few up to 120) others will have as few as 2 to 4. The color of the flowers is amazing ! Every color has been verified; white, red, yellow, mauve, green, purple - all except true blue and black. Hoyas are one of the easiest plants to propagate from cuttings. When your cuttings arrive by mail, they may be dehydrated and stressed. Soak them in mildly warm water, to which a little sugar has been added, for a few hours. Use a cutting from 4-6 inches in length with lower 1 or 2 bottom leaves removed and bury the cuttings with the rooting medium covering the bottom 1 or 2 nodes. Rooting hormone can be dusted lightly on the nodes prior to burying them. The pot should be a 3 to 4 inch one. Moisten it by bottom watering to eliminate all air pockets around the cutting and then place the pot in a sealed clear plastic bag to keep humidity high. Do not disturb for 4 weeks - them remove from bag and grow it on. Water only when dry and fertilize with a high phosphorus formula (1/4 tsp. / gallon of water) with each watering. Hoya Culture Light: Bright indirect light is an appropriate description of the light required for good growth and bloom by almost all hoyas. There are some species that prefer almost full sun to bloom well. Temperature: Most hoyas may be said to be tropical or semi-tropical. They thrive in temperatures maintained in most dwellings. Humidity: If you want blooms, humidity of 50 - 70 % is desirable. Volume 15 #3 10 July — Sept. 2002 Soil: Hoyas need a loose, well-drained soil that contains a fair proportion of organic matter together with sufficient sand or perlite and coarse charcoal. Water; Water only on demand. Do not over- water. Fertilizer: As previously stated a high phosphorous fertilizer in weak solution with every watering. (1/4 teaspoon per gallon of water) Here are some basic rules which should always be followed: (1 .) Don’t over-pot ! ! (2.) Use sterilized potting medium and sterilized pots. Finally when hoyas bloom, Do Not remove the spur-like peduncle from which the individual blossoms appear. It is from these growths that most hoyas produce a new crop of flowers year after year. P. V. Sencindiver 908 So. Beach Avenue Beach Haven, NJ 08008 U.S.A. E mail: jsencin@att.net Have you ever wondered: Do I really know if I have the correct label on one or more of my hoyas? Many times we are misled by what we believe to be true only to find out over time that we were wrong all along. I've wondered what the flower on Hoya macrophylla Blume is really supposed to look like. There are so many beautiful large palmately nerved hoya plants with different kinds of blooms. Many are labeled as Bloom's specie but are actually, Hoya polystachya Blume or Hoya latifolia G. Don. Even the literature is confusing and often contradictory. This later species was formerly named by Wight (1834) Hoya macrophylla. Well we have a nice drawing of Hoya macrophylla Blume in Rumphia 4 (1834) 32. I'm wondering if your plant has flowers like the drawing reproduced in black and white (see next page) ? Volume 15 #3 11 July — Sept. 2002 Hoya macrophylla Blume is not the only mystery in our collections, in fact there are many of them. Maybe this makes collecting interesting. It is sort of like a continuing mystery, a problem to solve. Actually things are changing with time as our abilities or our views also change. We are continually learning. For one thing notice the multiple peduncles, not common in hoya species. Next see the drawings below of the coronal lobes with long lance like outer lobes with really acute outer apexes. Blume says the corona is glabrous outside, pale purple silky inside and the flower is white otherwise. This flower is of the size and shape similar to the staminal corona of Hoya carnosa R. Brown. Well if your plant has flowers differing from the drawing you probably need to look for a different name. Another ”wonder” I have always maintained that if you fear making a mistake then don't do anything, for as sure as you do you most likely will make a mistake. A few years back (1995) there was a group of us who wrote an article pertaining to Hoya verticillata G. Don. Consequently many of us now refer to Hoya acuta Haworth under this name. Having seen photocopies of the herbarium sheets of this species, housed at the herbarium in Copenhagen, Denmark, I was bothered by the nervation of the leaves not looking like the drawings of foliage in the old hoya literature. I obtained samples of flowers and foliage of the original species and have determined that they have been misidentifled. So far I have not determined what species they represent but for sure they are not {Hoya parasitica Wall.) H. acuta Haworth. This is just one of many of our hoy as which are mislabeled and this should present a challenge to all of us. One more mystery to solve, one more page of spice added to an interesting genus of plants. Editor Volume 15 #3 12 July — Sept. 2002 A New Samoan Hybrid By Art Whistler Hoya X tuafanua Whistler & Kloppenburg hybrid nova. (= Hoya australis R. Brown x Hoya chlorantha Rechinger). This species was collected by Art Whistler on Tutuila, Samoa 5 March 1988. Type sheet #10958. Hoya, vine with milky white sap leaves 7.5 - 9.5 cm. long, x 4.0 - 5.4 cm. at the widest; ovate, shortly apiculate, base obtuse. Pinnately veined, midrib protruding below, surface curved from midrib above, concave below. Glossy medium green above, more dull and lighter green below. Corolla margins and especially the tip revolute. Corona elliptic, inner lobe short, dentate, outer apex narrowly rounded, dorsal surface concave, below grooved. One plant seen in the forest on Tuafanua Ridge behind the village of Vatia at 100 m. elevation. In postulating Hoya australis R. Brown as one of the parents we found the foliage of the hybrid to be similar in shape, size, venation and coloration. The Samoan Island subspecies of Hoya australis R. Br. have lighter green colored foliage than those subspecies found in Vanuatu and the Solomon Islands, and usually the leaf blade is smaller. The retinaculum of this hybrid is smaller in most dimensions than the typical H australis but the structure of the pollinia, particularly the expanded area without pollen in from the lower end of the pellucid margins (and the way the pellucid edge curves outward) is typical of the pollinia of H australis. It must be mentioned that the Volume 15 #3 13 July — Sept. 2002 retinaculum is large as in H. australis but the head here is not as long, leaving the shoulders higher up on the overall structure. The other parent is assumed to be *Hoya chlorantha Rechinger. The corolla of this parent is cut well below the middle, as is the hybrid. The coronal lobes are similar, and glabrous outside and finely pubescent inside as with our hybrid. The overall flower of H. chlorantha is smaller but one might expect hybrid vigor and enlarged flower parts in a hybrid. * Dr. Whistler feels the other parent is a variety of Hoya vitensis Turrill (H. betchei, H. chlorantha). Intemodes: long, terete, with finely puberulus, ca. 9 - 18 cm. long, ca. 0.04 cm. in diameter. Petioles; terete, narrow 1.3 cm. long, straight or curved, from slightly enlarged nodes. Peduncle: nodal, straight, 2.5 cm. long, 0.02 cm. in diameter, slightly enlarged at apical end; with basal bracts at pedicel base, glabrous. Pedicels: filiform, terete, glabrous, uniform 3.4 cm. long, ca. 0.01 cm. in diameter. Pedicel and calyx enlarged about 8X. Pedicel as mentioned above, with a few scattered hair cells, 0.03 cm. long. Calyx when pulled from corolla cups upward tightly, outside many stiff hair cells and on the bulbous base. Top view of the open calyx enlarged about 8X. Sepals overlapped slightly at the base with prominent ligules at the sinuses, edges ciliate; some hair cells on this surface. 0.24 cm. long; to the center 0.34 cm. 0.18 cm. at the widest. Apex obtuse. Ovaries: domed 0.15 cm. tall and wide at the base of the pair, glabrous. Volume 15 #3 14 July — Sept. 2002 Outside view of the corolla center. Enlarged about 8X. This surface is glabrous with a raised collar from both surfaces. Edges of inner corolla surface turn under slightly at the sinuses. Radial vascular bundles are visible in pickled material. Outer surface of the corolla at the Sinus area enlarged about 8X. Outer surface is glabrous inside surface is pubescent, more dense on the outer edges. Inside surface of the corolla enlarged about 8X. This surface is pubescent. Sinus - sinus 0.76 cm. Widest 0.80 cm. Sinus - apex 1.00 cm. Sinus - center 0.60 cm. Apex - center 1.35 cm. Inside view of the corolla lobe and the adjacent coronal lobes enlarged about 8X. The surface is more pubescent from below the ends of the coronal lobes outward, puberulent inward except around the short collar where there are inward pointing stellate hairs. The coronal lobes do not reach the corolla sinuses. Volume 15 #3 15 July — Sept. 2002 Inside view of the corolla at the sinus area and adjacent Coronal lobes enlarged about 8X. Again see the coronal lobes are short of reaching the corolla sinuses. Dorsal surface of coronal lobes are cupped especially in a channel down the center, here also is a linear raised umbo, Inner lobes are raised, relatively long and rounded; top sides and below are finely sulcate. Top view of the corona enlarged about 8X. Surfaces are glabrous. Apex - apex 0.41 cm. Apex - center 0.45 cm. Widest 0.20 cm. Aw. - aw. 0.23 cm. Ret. - ret. 0.14 cm. Ret. - center 0.10 cm. Ret. - aw. 0.10 cm. B Bottom view of the corona enlarged about 8X. The lower side is grooved. There is a narrow lobe on each side starting just below thew outer apex of the anther wing and extending to the outer apex which is marginate (see the apex at the middle right) these surfaces are finely sulcate. Groove extends in from the sinus toward the central thin column, opening 0.16 x 0.13 cm. ca. 0.05 cm. tall. The apex of the anther is squared off. Volume 15 #3 Pollmarium enlarged about 82X. Pollinia length widest Retinaculum length shoulder waist hip extension Translator length depth Caudicle 0.65 mm. 0.24 mm. 0.23 mm. to crotch 0.19 mm. 0.13 mm. 0.18 mm. 0.13 mm. 0.26 mm. 0.02 mm. 16 July — Sept. 2002 More detailed photo of the lower pollinia area and the small eaudieles and short translator arms along with the retinaculum. Enlarged as above. There is a wide vacuole on the inner end of the pollinia. a small clear bulbous caudicle supported by narrow up curved short translator arms. Note the fine grained pollen, the wide vacuole near the irmer apex of the pollinia, and the narrow translators. The retinaculum has distinct long extensions, broad shoulder and hip area. Top view of the corona with two scales removed to expose the pentagonal stylar table which is raised in the center with the apex typically slightly divided and mealy. Note the dorsal surface of the lobe to the upper left that shows the channeled concavity with a long ridge down the center containing a small forward umbo. The inner lobes could most likely be classified as spatulate, although much rounded and they do not reach the center. Side view of a coronal scale enlai'ged about 8X. Anther wings are shallowly scythe shaped and there is a definite column supporting the scale. Irmer lobe is raised but anthers are exposed, outer apex obtuse. CORRECTIONS Kim Yap (Singapore) pointed out a orthographic error for the species Hoya enduensis Kiew. We published a photo of the foliage of this plant (by Ted Green) and the original description in the last issue of Fratema, 15/2, 2002. Kim points out that the name of the place where the hoya was collected is Ulu Endau, in the State of Johor, Peninsula Malaysia. Under the rules of botanical nomenclature 73.1, the original spelling of a name or epithet is to be retained, except for the correction of topographic or orthographic errors Kim is correct. The name should be Hoya endauensis Kiew. Volume 15 #3 17 July — Sept. 2002 tiOYA PHOTO GALLEJi V ^ Photos by Ann Wayman Text By Dale Kloppenburg Top: Hoya obscura (Elmer) Burton. A Philippine species with distinctively nerved and shaped leaves, easily recognized even when out of flower. We have many clones of this species in commerce and all are easy to grow and flower. It is a compact bushy plant with adequate glossy foliage. Flowers are cream to deep rich pink in the various clones and foliage to match from pale green to one with deep reddish overtones especially in the spring. In the Philippines Hoya obovata is often used in outdoor landscaping, where it is grown around coconut husks. It makes an excellent houseplant and is a good light garden specimen. Center left: Hoya parvifolia Wight (foliage). This is a high altitude plant which probably prefers to be grown a little cooler than lowland species. For me it has an oriental appearance, reminds me of a fine cut bamboo. This one came to us from India in the hills of Malabar at 4,200' elevation and is found in Travencore at 3,000- 4,000' altitude. It blooms with a whiter flower and red center. It makes a gorgeous basket plant. Center Right: Hoya subquintuplinervis Miquel. Named way back in 1869 and comes from 'Siam'. I believe our clone was collected in Northern Thailand but is reported from Patchahuru in Southwestern Thailand. It has palmately nerved foliage with broadly rounded bases. Flower clusters are large with beautiful clean waxy blooms. Add some oyster shell to your planting mix for this one. It characteristically grows like Hoya merrillii, Hoya cardiophylla and Hoya quinquinervia also palmately nerved species. Bottom left: Hoya pubicalyx ’chimera’ Merrill. One of several color variations of this most popular species. From the Philippines. In the photo we see only the spectacular buds but the flowers open to be just as strikingly interesting. Even out of flower the foliage of this clone is beautiful and outstanding. Very easy to grow and flower. Like most Philippine hoya species it likes to be kept well watered. Watch in a coming issue of Fratema for a new 'chimera' with this same coloration. Bottom Right: Hoya kentiana (tsangii). If I had this plant I would call it Hoya tsangii (Burton)ex Kloppenburg. It has narrow glabrous foliage originally named by Dr. Elmer as Hoya angustifolia. This species is easy to grow and will not get out of bounds so makes an excellent basket plant. It is always neat and clean in appearance. It has the typical small revolute fuzzy flowers found in so many Acanthostemma hoyas. They flowers are red and have a honey like smell. This species also comes from the Philippines. Volume 15 #3 18 July — Sept. 2002 ■' /A / i I FRATerna Official Bulletin Of The Volume 15 #4 INTERNATIONAL HOYA ASSOCIATION Oct- Dec. 2002 Hoya buotii Kloppenburg Picture by Monina Siar INTERNATIONAL HOYA ASSOCIATION Administrative Office; 1444 E. Taylor St. Vista, CA 92084 Phone. (760) 758-4290 Fax; (760) 945-8934 E-Mail; RBGdns@aol.com A Non-Profit Organization Bulletin published quarterly. ISSN 1005&4564 web page: www. internationaI-hoya.org NT I.H.A. Affiliates 2002-2003 rates for a 1 year membership (USA), which includes our quarterly publication are $18.00 per year. Outside the United States: U.S. $25.00 per year, sent via airmail. Officers And Editors President Vice President Secretary/T reasurer Editor Assistant Editor & Web Administrator Dr. Harriette Schapiro Chuck Everson Ann Wayman Dale Kloppenburg Edward Gilding San Diego Exotic Plant and Hoya Group, San Diego, CA. Svenska Hoya Sdlskapet, Borldnge, Sweden Editorial Policy Errors of fact may occur from time to time in "Fratema". It is the policy of the IHA to publish corrections of fact, but will not comment on matters of opinion expressed in other publications. Fraterna Board Of Directors Dale Klq>penburg Ted Green Dr. Vic Sencindiver Correspondence Secretary Round Robin: Membership Sec’y. Slide Librarian: Rosemary Peterson William J. Wayman Jerry Williams Jerry Williams 1444 E. Taylor St. Vista, CA. 92084 Dr. Vic Sencindiver 908 S. Beach Ave. Beach Haven, NJ. 08008 Rosemary Peterson 6262 E. Killdee St. Long Beach, CA. 90808 e-mail :rsmary940@aol. com Honorary Board Members Representing Europe; Eva-Karin Wiberg Representing S.W. U.S.; Mary Jo Gussett Representing Central Europe; Ruurd Van Donkelaar Fratema is the official quarterly bulletin published by the International Hoya Association. The administrative office is located at; 1444 E. Taylor St., Vista, CA. 92084-3308. Opinions stated in articles and editorials of Fratema do not necessarily represent opinions of other I.H.A. members, the Board of Directors, or its officers. All article submitted to Fratema for possible publication may be edited for grammar, form and content. All material in Fratema may be reprinted by non-profit organizations (unless permission is expressly denied in a note accompanying the material) provided that proper cr^it is given to I.H.A. Fratema and the author, and one copy of the publication containing the reprint be sent to the I.H.A. administrative office. No reproduction in whole or part by any other organization, publication or individual, is permitted except by permission of the editor. Editor’s e-mail address: rdk03@cvip.net Correspondence Secty: jsencin@worldnet.att.net Our Cover Story New Philippine Hoya Species Hoya buotii Kloppenburg sp. nova. Type #67049 (CAHUP). Hoya leucorhoda Schlechter affmis sed calycis lobus ciliatus 0.3 cm. longus vs. non-ciliatus 0.25 cm. longus; pollinarium translatoribus longissimus vs. brevissimus, differt. Speciem haec novam per Inocentio Buot dedicamus. Like Hoya leucorhoda Schlechter but differs in the ciliate calyx lobes 0.3 cm. long versus non ciliate 0.25 cm. long and the translators of the pollinarium very long versus very short. This new specimen is dedicated for Inocentio Buot. This species was collected from Mt. Banahaw, Quezon Province, Luzon, Philippines. The type material is from the UPLB plant breeding program. Pedicel enlarged about 8X. 3.2 cm. long, roughly lenticeled, terete 0.12 cm. in diameter. Enlarged near calyx. Pedicel attached to the corolla enlarged about 8X. The sepals do not reach the corolla sinuses, are glabrous but edges ciliate and central thickened surface granulose. Corolla surface outside glabrous with some punctations, waxy. Calyx top view enlarged about 8X. Sepals broad based overlap about 10%, ligules present 0.02 - 0.03 cm. long apices acute, inside waxy glabrous, edges ciliate, apex obtuse. Center to apex 0.40 cm. sepals 0.30 cm. long and 0.20 cm. wide. Vol. 15 #4 1 Oct. - Dec. 2002 Outside surface of the corolla at the sinus. This surface is glabrous. Sinus - sinus Sinus - center Sinus - apex Apex - center 0.60 cm. 0.50 cm. 1.10 cm. 1.45 cm., the diameter of the flower flattened is 2.90 cm. Corolla lobe outside enlarged about 8X. The edges above roll under as does the apex, exposing the dense stiff hirsute pubescent surface. The corolla is cut much more than half way to the center. Top view of the corona and inside surface of the corolla enlarged about 8X. The coronal lobes do not reach the sinus, are raised slightly in the center and also the outer lobes. Corolla surface is densely hirsute except under the corona. The anthers are creped in the center. Inner surface of the corolla with the corona removed, enlarged about 8X. Lobes and band near the sinuses densely hirsute, glabrous inside except very stiff hair cells pointing inward around the collar. Collar area and corolla relatively thick. Vol. 15 #4 2 Oct. - Dec. 2002 Side view of the removed corona, inner lobes and outer lobes raised, thick and fleshy. Inner lobes rounded and spatulate, darker in color. Outer apex turned over slightly, blunt, dorsal rounded and slightly keeled. Apes - apex 0.45 cm. Apex - center 0.50 cm. Widest 0.25 cm. Anther wing- aw. 0.25 cm. Retinaculum - ret. 0. 1 2 cm. Anther wing - center 0.22 cm Bottom view of the corona enlarged about 8X. This surface is channeled and the sides are sulcate, the channel extends only to the sinuses. The anther wings are doubled and project with an acute apex. The central column is thickened and short. Lower center is the staminal pentagonal crown enlarged about 8X. The center is raised but simple in structure, small. The dorsal surfaces of the lobes show the central raised, rounded keeled area and the depth of the scales. Side view of an individual scale enlarged about 8X. Inner and outer apices are raised, so sway backed in the central region. Anther wings are not deeply configured. Anther is creped and rises above the scales inner apex. Vol. 15 #4 3 Oct. - Dec. 2002 Pollinarium enlarged about 85X. This is a large pollinarium with a small retinaculum, typical of many of Dr. Schlechter's species. Pollinium length 0.85 mm. widest 0.30 mm. Retinaculum length 0.27 mm. shoulder 0.15 mm. waist 0.08 mm. hip 0.10 mm. extensions 0.04 mm. Translators length 0.35 mm. depth 0.03 mm. Caudicle bulb diameter 0.13 mm. This species has pollinia nearly as long as Hoya meliflua subspecies fraterna Green, but the retinaculum is as small as in the species Hoya lacunosa Blume. Leaves of this species sent by Dr. Monina Siar via E- mail. The leaf is thin textured, long elliptic-lanceolate with pinnate anastomosing venation. Oct. - Vol. 15 #4 4 Dec. 2002 This species is named for Inocentio Buot, a plant Taxonomist at the University of the Philippines at Los Banos, Laguna, Philippines (UPLB). Name: INOCENCIO E. BUOT JR. Highest degree: Ph.D. Botany University granting the degree: University of Chiba, Japan 1998 Present position: ASSOCIATE PROFESSOR OF BOTANY Place of Work: University of the Philippines, Los Banos, Laguna, Philippines. Address: Institute of Biological Sciences, UPLB, College, Laguna, Philippines. Nature of Work; Teaching, research and extension in the field of biodiversity, phytogeography and systematic anatomy of Apocynaceae and Asclepiadaceae. Publications: over 50 articles, manuals and extension materials in local and international scope. Date of Birth: May 21, 1960 Married and have 3 children Some Hoyas Have A Mind of Their Own By P, Victor Sencindiver, M.D. One of my favorite hoya species is Hoya nummularioides. It is beautiful, floriferous and extremely spicy fragrant. It announces itself to your nose when it comes into bloom. Dale Kloppenburg’s description of it goes something like this: “The plant has a rather upright growth habit and with age, some looping branches. The leaves are slightly cupped downward and are a rather dull, olive green covered with fine hairs, which gives the plant a suede-like or velvety appearance. The species blooms only once a year. Nearly every node produces an umbel of blooms. The flowers are white with a deep pink center. The flower peduncle is deciduous and drops off after the bloom period in the fall” This description fits my plant to the tee. My clone came from Logees Greenliouses in 1982. It has followed the pattern of a profusion of bloom every year in late September, drops its peduncles after blooming and does not bloom again until the next September — — that is until this year! Vol. 15 #4 5 Oct. - Dec. 2002 It bloomed aggressively as usual in September 1 999 and subsequently dropped its peduncles. Then in late December, I noticed that it had a few blooms on it again. These lasted about two weeks and again, the peduncles were shed. To my great surprise in early March 2000, the plant burst forth with a profusion of bloom just as it always did in September. Now as I write this in early April, the peduncles have remained on the plant instead of dropping. What has happened to my classic clone of the species? Could its change in temperament be related to my experiment of introducing H.I.D. lamps to the plant room? (See article in previous issue of Fratema.) Will it bloom again in September ??????????? Addendum: My plant had a token bloom in September of 2000. Now in September of 2001 it also had only a moderate bloom. It remains a very healthy-looking basket plant. Who knows about the ways of a lady plant ! ! ! P. V. S. Picture taken by Ann Wayman of Hoya nummularioides Costantin Vol. 15 #4 6 Oct. - Dec. 2002 Picture of this Hoya nummularioides Costantin in fall bloom, note all the peduncles at nearly every node, even some leafless nodes. Photo by Ann Wayman New Malaysian Hoya Species Hoya acicularis Green & Kloppenburg (Asclepiadoideae) sp. nova. Section Acanthostemma (BL) Kloppenburg. Type: Danum Valley, Sabah, Eastern Malaysia; Green No. 93031, (BISH) 1/24/91 from Tenom Orchid Center. Ex hort. Green Plant Research, Kaaawa, Hawaii. Hoya acicularis Green & Kloppenburg distante affmis Hoya gigantangensis Kloppenburg, IHA journal Fratema 4“ Quarter 1992, sed folds teretiusculus (non linearis-lanceolatus); pedunculi 1 .2 cm. longis vs. 20 cm. dignosculi. Diagnosis; Hoya acicularis Green & Kloppenburg, new species is distantly allied to I) Hoya gigantangensis Kloppenburg, IHA journal Fratema 4* Quarter 1992 but is Vol. 15 #4 7 Oct. - Dec. 2002 distinguished from it by semi-terete leaves (not linear-lanceolate); peduncle 1 .3 cm. long versus 20 cm. long. (Both species are in the same section). A tropical, epiphytic, scrambling vine with slender stems and semi-terete, 0.3 cm. X 0.66-1.8 cm., dark green leaves, bifoliate at the node, that may be straight to curved and twisted; petiole curved; peduncle borne at the node and right angle to the pedicels, bearing 1.5 - 2.0 cm. beige flowers, in a pendant, flat umbel; pedicel 1.5 + cm. long, curved. Seed pod not seen. Etymology: From the Latin - acicularis = needle-like (the shape of the leaf). General growth: The pipe is 1” in diameter. Photo by Ted Green. Culture: Keep in a warm place - no less than 60°F. Plant in a loose, quick draining mix with occasional watering and fertilizing with a balanced fertilizer. Light should be medium to bright but does not seem to flower without bright light. That same bright light may turn the leaves reddish. Because of its rampant growth, it should be provided with a supporting trellis or hanger. Vol. 15 #4 8 Oct. - Dec. 2002 The tangled growth with peduncle, tipped up. Photo by Ted Green. Critical measurements: Pedicel: curved +1.5 cm. long, terete, glabrous, smooth. Calyx: 0.40 cm. in diameter (flat), sepals outside granulose, with some scattered hair cells, long narrow triangular, a few cilia, reach the corolla sinus, inside glabrous, ligules present. Sepals 0.17 cm. long base 0.12 cm. Ovaries: bottle shaped, glabrous, pair 0.14 cm. tall base of pair 0.10 cm. Corolla: outside glabrous, inside pubescent except for apical area, which is glabrous, outer end acute, long. Sinus to sinus Sinus to center Sinus to apex Widest Apex to center 0.20 cm. 0.19 cm. 0.45 cm., corolla cut well below the middle. 0.30 cm. 0.60 cm., flower flattened is 1.20 cm. in diameter. Vol. 15 #4 9 Oct. - Dec. 2002 Corona: 5 lobed, glabrous, upright with long bilobes, inner apex spatulate, long and narrow; outer apex obtuse. Top nearly flat with slight keel and finely sulcate, especially the bilobes (longitudinally). Scale does not reach the corolla sinus. Scale, broadly diamond shaped. Collar thick 0.10 cm. tall. Apex to apex 0.24 cm. Apex to center 0.26 cm. Apex to outer end 0.29 cm. Retinaculum to ret. 0.19 cm. Ret. to center 0.10 cm. Ret. to aw. 0.12 cm. Anther wing to aw. 0.16 cm. Pollinarium: Unique! Pollinia 0.74 mm. long; nearly uniform in width 0.19 mm. bottom and top rounded evenly. Pellucid edge clean and distinct. Vacuole clear, widest at the base. Translators 0.22 mm. long, clavate shaped, extends well beyond the edge of the pollinia, widest at outer apex 0.09 mm. wide; attached well down near the hip of the retinaculum. Caudicles clear, vortex shaped, pollinia in funnel end, top 0.07 mm. wide; 0.09 mm. long to a point near rectinacular attachment. Bulb diameter about 0.15 mm. Retinaculum 0.15 mm. long including extensions, head rounded with slight shoulder there 0.05 mm. wide, waist ca. 0.03 mm. wide; hips 0.05 mm wide, center grooved. Extensions, ca. 0.02 mm. long. Photomicrographs of flowers sent by Ted Green: Calyx side view enlarged about 8X. Sepals are long, outside hirsute. Top view of the calyx enlarged 8X. There are a few hair cells along the edge but I would not call this one ciliate; there are ligules present. Ovaries are bottle shaped. Vol. 15 #4 10 Oct. - Dec. 2002 Top view of the corona and corolla enlarged about 8X. Scale size is broadly diamond shaped with broad bilobed extensions. The inner coronal lobe is spatulate, outer broadly acute. The scales exceed the corolla sinus. Corolla inside is densely pubescent except for the apex which is glabrous, Outside glabrous. Skewed bottom view of the corona enlarged about 16X showing the sulcate flat bottomed bilobes forming a channel below clear to the thickened (dark red) hirsute column. View of the corona enlarged about 1 6X showing the longitudinal sulcation of the coronal bilobes curving around the blunt outer apex of the lobe and meeting at the end. The bilobes begin well up the side of the scale. The anther slot curves to the under side of the scale. The dorsal portion of the scale has a slight keel dovm the center. Vol. 15 #4 11 Oct. - Dec. 2002 Pollinarium enlarged about 165X. This is a beautiful pollinarium with long slender pollinia, very large well developed translators and clear distinctive caudicle, a very slim retinaculum. All in all this species has a distinctive foliage and could easily be segregated from other Section Acanthostemma specie hoyas by its distinctive pollinarium. The photo here is a composite of two photos. Correction: The cover picture in the last issue of Fratema, 15/3 was taken by Monina Siar and not by Eva-Karin Wiberg. Sorry about that, I had to change the picture and cover story at the last minute and neglected to proof read correctly! Dale K. Vol. 15 #4 12 Oct. - Dec. 2002 Understanding Hoyas by Dale Kloppenburg The Inflorescences of Hoya The (flower stem) peduncle (see labeled material in subsequent pages) arises between the petioles at the nodes. There are dormant buds on either side of the stem, and they are thus “intrapetiolar”. In most cases, they are perennial. Numerous successive flushes of flowers arise from the apical area of the peduncle. These can be produced over a number of years. This area at the apex of the peduncle is thickened and scarred with small bracts, which are at the base of each individual flower petiole. Many petioles are inserted in a tight spiral arrangement on the rachis. The umbel-like flower clusters have been classified into the following types; (1) Globular. All the pedicels are the same lengths giving a ball like flower cluster. (2) Flat or concave. Pedicels of varying length, shortest on the interior, longer as they progress outward. The pedicels form rigid curves. Positively geotropic. They hang down. (3) Negative geotropic. Apex of the peduncle pointed in a horizontal position or upright. This gives rise to a rigid uniform pedicel convex or globose umbel held in a horizontal or upright position. It could be added that umbels may be made up loosely or may be compact in form. Flower Corolla with 5 lobes, apex rolled under, upper surface pubescent. Corona of 5 lobes, outer lobes acute & waxy white, inner lobes dentate & dark red in color. Anther appendages meeting and showing in very center of the corona. •Sinus, the cleft in each corolla lobe. Here the coronal outer lobe does not reach the sinus. Just visible in the upper right is the pedicle, which supports this flower. Vol. 15 #4 13 Oct, - Dec. 2002 Cross Section of Hoya Flower f Triangular membranous Anthers meeting in center. Stylar crown. Stigma on lower comer of stylar table. Receptive area. Corolla, 5 fused petals. Spongy material from stigma to ovaries. Outer coronal lobe nner coronal lobe. Calyx. Twin Ovaries surrounded by stylar tissue. Ovules visible inside ovary. Hoya australis, flower cross section, greatly enlarged. ( ( Vol. 15 #4 14 Oct. - Dec. 2002 Corona of a Hoya Flower Coronal scale (5 scales) make the corona (crown). Anther wings, sides forming the channel to the stigmatic receptive area. Anthers (5) meeting in center. Retinaculum Inner lobe of coronal scale. Outer lobe of coronal scale. up Photo of hoya flower crown (corona). A top view, magnified approximately 15 times. Oct. - Vol. 15 #4 15 Dec. 2002 Stylar Table of Hoya Flower Coronal Scale (outer lobe). Apical area of stylar column. Anther below inner coronal lobe. Inner coronal lobe. — — Dark amber retinaculum with translators and caudicles attached to two pollinia. This is situated at one point of the pentagonal stylar table. Anther wings with channel leading to the stigmatic receptive area directly under the retinaculum. Picture of a hoya pentagonal stylar table. Three coronal scales and the underlying anthers have been removed to show the relative position of the pollinarium. Two scales remain, one at the right side and one above. Magnified approximately 45 times. VoL 15 #4 16 Oct. - Dec. 2002 BIRD TRACKS From: Robin Director Rosemary Peterson 6262 Kildee Street Long Beach, CA 90808 (562) 425-4765 Another year is almost here! Did you enjoy this past year? Did you join a robin and meet nice people, exchange ideas, learn new things about hoyas, exchange cuttings, increase your collection and have fun doing it? If not be brave and do so now I Make a new year resolution now, give a membership of IHA to a friend, a plant enthusiast, or a family member, maybe best of all a young person. Sponsor a photo Above all, enjoy life! Stop and smell the flowers! Robin #3 Carita Finland. Jan 2002. Autumn and winter are not the best times to grow hoyas. As many hoyas suffer from lack of sunlight, turn yellow and drop leaves, but not all. There are many hoyas which have their "main blooming time" just in the Autumn when the days get shorter. At least here in Finland, and also in Sweden. For example, H. linearis, H. australis, H. thompsonii, H. retusa, H. odorata, H. calycina, H. waymaniae, H. polyneura and H. odorata have bloomed between September and December and H. retusa is still blooming. It must have over 80 flowers/buds and there are still new ones coming. Amazing in my opinion. Robin #3. Anne ED. March 2002. The only hoya I have blooming this spring is Hoya crassicaulis, which bloomed about a month ago, and looks like it is going to bloom again. I don't have many in bloom, I blame the heat up where most of them are hanging. Robin #3. Debbie. May 2002. My H. lacunosa bloomed for the first time. I was thrilled. It has tried to bloom several times in the past but, they always turned yellow and fell off It was a real treat. Carnosa, motoskei, and parvifolia also just bloomed for the first time. One other first timer budded right now is Wilber's hybrid. Hoyas that are blooming or currently budding or blooming are H. kanyakumariana (a favorite) krinkle-8 (also one of my favorites, as pink and so delicate), H. multiflora, H. minibella, H. lobii, H. nicholsoniae, H. obovata and H. plicata. Robin #3. Harriette, CA. June 2002. Carita, your files on your hoyas must have a wealth of information on the seasonal flowering of Hoyas! Yes I have noticed that H. polyneura does like autumn and cooler weather. I am not sure whether it is day length or length of dark period but maybe always did flower in the fall after the weather cooled down at night. Robin #3 Anja, Germany. After I put the last Round Robin to the post office, I had some more hoyas, that bloomed for the first time: H. bilobata, H. bordenii, incurvula "Sulawesi", H. picta and H. thompsonii. I am always very happy to see how they bloom and develop, but another nice aspect with this hobby is that you also get in contact with other people throughout the world. Most of my plants have their place on the window-sills right above the radiators. They dry out almost every second day. Hoya serpens is the only one I have lost. A few lose one or two leaves. Vol. 15 #4 17 Oct. - Dec. 2002 Top Center: Hoya archboldiana C. Norman. Picture taken in Kaaawa, Hawaii by Ted Green. It is easy to see this is one of the largest flowered hoyas. It is a native of New Guinea at Rona, Laloki River. Before it was relocated and placed in commerce there was a lot of miss-speculation as to what this species really looked like. Hoya archboldiana was named in 1937 by C. Norman he said "The large shining leaves, large flowers and corona seem very distinctive and unlike any other species." This is a strong growing plant with nice large glossy foliage, flowers are up to 10 in an umbel and they are fragrant. Second row Left: Hoya odorata Schlechter. Picture by Ann Wayman. This is a high elevation, bushy type, species from the Philippines. It is often found on the near tops on many mountains in that country. This one was pictured in our WC 1 #6, 5, 1989 and again in Fratema 1 Q, 14, 1997. As its name implies it is highly fragrant, a sharp lime- like smell. Its bushy growth makes it distinctive and a nice pot plant. Foliage is shiny green, rather thin and often the new growth will be pink in color. Second row Right: Hoya pseudolittoralis C. Norman. Picture by Ann Wayman. If we have this correctly identified it is a New Guinea species first collected at Dagawa, ^ Oriomo River. The author says "Not unlike Hoya littoralis Schlechter, but apparently its alliance is with H flavescens Schlechter, although the leaves are very different." Those species with very white finely pubescent corollas and the highly contrasting pink coronas are always outstandingly beautiful. The growth is a shrubby-vine, so easy to confine. Because this is a seashore plant it might be well to add some crushed sea shells to the mix, a calcium source. Bottom row Left: Hoya calycina Schlechter. Photo by Ann Wayman. This is a strong growing vine with large downy foliage. Flowers are spectacular with beautiful eontrast. We have pictured this in Fratema 4 Q, VII, 1990. Again a New Guinea species, collected first in 1908, at about 3,500' elevation (high for this tropical area). The flowers are similar to those of H. albiflora but smaller. To me it also resembles those of Hoya australis. Bottom row Right: Thought you might like a picture of hoyas growing in the wild. This is near the village of Ghara, above Tato Pani, Central Nepal at 5,800' elevation on a steep slope. The tree overhangs the Kali Ghandaki River gorge. The picture was a slide taken in March 1986. I do not know the photographer. This is an ideal place for a hoya to take root in the mass of moss in the crotch of tree limbs, bathed by monsoon fogs and occasionally drenched in rain. I have not identified the species but it appears to look like a Hoya acuta. 18 ViOYA PHOTO GALLER)^ 19 *0 .4 1! ■ 'if j .»■ t- ■A:„ ""' ■ . ■;. ^v,. ■■> i ;■ :■■ . ./ -If* ^ GREEN: PLANT RESEARCH P.O. 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