V7 PHYTOLOGIA An international journal to expedite plant systematic, phytogeographical | and ecological publication - eer ha ein aac) dtd eh CAN ee we : Vol. 73 October 1992 No. 4 . * CONTENTS ~ TURNER, B.L., Two new cliff dwelling species of Pinaropappus (Asteraceae: : Beueene) aromtnorbhern Mexico. >. 2.2.6. sei seeesseevscnctdsoeetss 261 _NESOM, G.L., Grindelia villarrealui (Asteraceae: Astereae), a new species 4 SPMMMTIGASHETIN NICKICO. \\2).°.'... ds aaccsevecedeaceasccsecvduucecues 264 ? NESOM, G.L., Laennecia spellenbergii (Asteraceae: Astereae), a new species INST PEC RICO 5 6 ain 'a's a pivss eis spi bs nsvPtis wid de 4 oo peas Wap ba aw 267 _ BENITEZ de ROJAS, C. & M. MARTINEZ, A new species of Deprea (Solan- MMO BC ZUNALA.S , Lin. 3) don a heen hea tana Soham anes wie ae aon ate 270 > ee JONES, S.D. & J.K. WIPFF, Eustachys retusa (Poaceae), the first report in I Florida and a key to Eustachys in Florida. ..............0.0-0eeeee 274 OTT, E.J., Matelea magallanesiit, a new species of Asclepiadaceae from MRR IMLS Bogs Cline ae Fats a aise aa Ov ave Nv ec ooateae cee 277 -TURNER, B.L., Taxonomic overview of the genus Cologania (Fabaceae, Phase- cai Crs kids dues Ued one oe ssaaied «oi ce win aes 281 _TURNER, B.L., Verbesina zaragosana (Asteraceae, Heliantheae); a new species 4 SrapemenevenE can, MEXICO. §.s.!. bi fess pecan se oe ne ode cdeeandiaqegees 302 _AURNER, B.L., Two new species of Ageratina (Asteraceae, Eupatorieae) | ERNIE Ae NICHI fos ie es vo a so 5,h'o.s sd eainn d'bde sb ob nie oso" Re aetn ov oe 304 —Contents continued on the inside cover. [| es RA RY pec2 8 1992 NEW YORK BOTANICAL GARDEN (Contents continued) MCNEAL, D.W., New taxa and combinations in western North American Liltacene:»2 3.30.0 i. Phaa we Cae hated Unmet amen eveaiecang is tie nee nie a 307 KEIL, D.J., Taxonomic notes on California species of Cirsium (Asteraceae: Carduieae). Sorc isiet ip ae ee ang tuber Oi > ccakibeh ole ha esas ee 312 NESOM, G.L., A new gypsophilic species of Xylothamia (Asteraceae: Aster- eae) from the Cuatro Cienegas area of Coahuila, México. ......... 318 NESOM,G.L., A newly recognized species of Mexican Verbena ( Verbenaceae). Gf siailasvart apts Ra etats cee date Sale’ Batata atuig hari ay Cnta cee ar nadaa an e 321 NESOM, G.L., Species rank for the varieties of Grindelia microcephala (Aster- AceRE: AStETERE) > oc wisi Snes thicie pn tk vain bt cn wd sinless, Orage 326 NESOM, G.L., A second species of Hunnemannia (Papaveraceae) and syn- opsib of Che genus... 2 o.ecenicdeaes cet v hee hatod sue Sal 2% ae 330 NESOM, G.L., Oritrophium orizabense (Asteraceae: Astereae), a new species and the first report of the genus from North America. ............ 338 PHY TOLOGIA (ISSN 00319430) is published monthly with two volumes per year by Michael J. Warnock, 185 Westridge Drive, Huntsville, TX 77340. Second Class postage at Huntsville, TX. Copyright ©1991 by PHYTOLOGIA. Annual domestic individual subscription (12 issues): $36.00. Annual domestic institutional subscription (12 issues): $40.00. Foreign and/or airmail postage extra. Single copy sales: Current issue and back issues volume 67 to present, $3.50; Back issues (previous to volume 67), $3.00 (add $.50 per copy postage and handling US [$1.00 per copy foreign]). Back issue sales by volume: $17.00 per volume 42-66 (not all available as complete volumes); $21.00 per volume 67-present; add $2.00 per volume postage US ($4.00 per volume foreign). POSTMASTER: Send address changes to Phytologia, 185 Westridge Drive, Huntsville, TX 77340. Phytologia (October 1992) 73(4):261-263. TWO NEW CLIFF DWELLING SPECIES OF PINAROPAPPUS (ASTERACEAE, LACTUCEAE) FROM NORTHERN MEXICO B.L. Turner Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT Two new cliff dwelling species of Pinaropappus are described from México: P. pattersonii B. Turner from near La Trinidad, Nuevo Leon, and P. pooleanus B. Turner from Basaseachic Falls, Chihuahua. Both taxa are related to the cliff dwelling Pinaropappus parvus S.F. Blake, which is largely endemic to the White Mountains of southern New Mex- ico and the Guadalupe Mountains of closely adjacent Texas. The latter is readily distinguished from both of the new species by its reduced habit, the stems thick, woody and much branched from the base, form- ing low rosulate mats. KEY WORDS: Pinaropappus, Asteraceae, Lactuceae, México Preparation of a treatment of Pinaropappus for the Asteraceae of México (Turner & Nesom, in prep.) has occasioned the present paper. Pinaropappus pattersonii B. Turner, sp. nov. TYPE: MEXICO. Nuevo Leon: Mpio. Montemorelos, 5 km SE of La Trinidad, in Canyon Cebolla near Ojo de Agua (25° 11’ N, 100° 08’ W), basswood-oak-hickory-walnut association, growing on limestone cliff, ca. 2000 m, Aug 1988, Thomas F. Patterson 6322 (HOLOTYPE: TEX!; Isotype: MEXU!). Pinaropappo pooleano B. Turner similis sed plantis majoribus (15-20 cm altis vs. 3-6 cm) stolones aerios valde arcuatos efferen- tibus, foliis longioribus nonlobatisque, et pedunculis proxime infra capitula recurvatis differt. Perennial acaulescent glabrous cliff dwelling herbs 15-20 cm high, arising from slender rhizomes. Lower shoots producing an array of slender, stolonif- erous, arcuate, aerial stolons or offshoots which apparently root at the nodes. 261 262 PHY TOLG GIA volume 73(4):261-263 October 1992 Leaves of primary rosettes linear-oblanceolate, glabrous, mostly 10-12 cm long, 0.3-0.5 cm wide, weakly nervate, minutely white punctate, the margins entire, the apices acute to obtuse. Heads single on naked scapes 14-22 cm long, the upper portion of peduncle, just below the heads, arcuate to reflexed. Involucres turbinate, 9-10 mm high, the bracts 2-3 seriate, linear-lanceolate, glabrous, the apices obtuse to acute, usually purplish. Receptacles paleate, the pales linear- lanceolate, scarious. Florets ca. 15 per head, the corollas pale pink (dried), the ligules 6-8 mm long. Achenes (immature) ca. 4 mm long, glabrous, seem- ingly somewhat beaked for ca. 1.5 mm; pappus of ca. 40 tawny uniseriate very weakly barbellate bristles 4-5 mm long. Pinaropappus pattersonti is obviously closely related to P. pooleanus but can be readily distinguished by its taller habit, larger, unlobed leaves, recurved heads, and lower, lateral stems which are markedly arcuate stoloniferous. It is a pleasure to name this species for its only known collector, Mr. Thomas J. Patterson, graduate student in Botany, University of Texas, Austin, who has collected extensively in the area concerned. Pinaropappus pooleanus B. Turner, sp. nov. TYPE: MEXICO. Chi- huahua: Mpio. Ocampo, area of Cascada de Basaseachic at the con- fluence of Rio Basaseachic and Rio Durazno, ca. 1.2 km S of village of Basaseachic (28° 02’ N, 107° 55’ W), “abundant on wet cliff faces directly below falls with Erigeron basaseachensts; also in crevices at top of falls,” ca. 1800 m, 27 Apr 1986, Guy Nesom 5444, with R. Spellenberg, R.D. Corral et al. (HOLOTYPE: TEX!; Isotypes: MEXU,US). Pinaropappo pattersoni B. Turner similis sed plantis nanis ab- sque stolonibus et pedunculis brevioribus (3-6 cm longis vs. 14-22 cm) non recurvatis infra capitula differt. Dwarf acaulescent glabrous cliff dwelling herbs 2-10 cm high, arising from relatively slender rhizomes. Lower stems apparently not producing lateral aerial stolons. Leaves mostly 30-60 mm long, 1.5-7.5 mm wide, linear-oblanceo- late, glabrous, the margins entire or with 2-5 deltoid lobes, the apices mostly acute. Heads single on naked scapes 2-10 cm high, the peduncles not recurved or reflexed apically. Involucres turbinate, 9-10 mm high, the bracts 2-3 seriate, linear-lanceolate, the.apices mostly obtuse or rounded, rarely acute, usually rosy tinged. Receptacle paleate. Florets 10-15 per head, the ligules 8-10 mm long, white with purple midstripes beneath. Achenes (immature) ca. 2 mm long, glabrous, gradually tapered apically; pappus of ca. 40 tawny, uniseriate, weakly barbellate bristles 4-5 mm long. ADDITIONAL SPECIMENS EXAMINED: MEXICO. Chihuahua: Mpio. Ocampo, Basaseachic Falls, just S of Basaseachic, ca. 0.3 km downstream from the bottom of the falls, pine-oak forest, rocky basaltic substrates, 16 Turner: Two new Pinaropappus from México 263 May 1985, Lavin 5405 (TEX); in canyon along Rio Basaseachic leading to the falls, crevices in rock at edge of cliffs at top of falls, ca. 1800 m, 1 Aug 1988, Spellenberg et al. 9606 (TEX). This material was first recognized as distinctive by Ms. Jackie Poole through the several collections cited above, all of which she examined and provided an unpublished name for. Since she has long been a consummate scholar of the group, having worked with the genus in the field and in the herbarium, beginning when she was Curator of the Plant Resources Center collections (LL,TEX), I take much satisfaction in naming the taxon in her honor. She is currently working for the Texas Parks and Wildlife in Austin, Texas, in their program for the preservation of endangered plant taxa. ACKNOWLEDGMENTS I am grateful to Guy Nesom for the Latin diagnoses and to him and T.P. Ramamoorthy for reviewing the manuscript. Phytologia (October 1992) 73(4):264-266. GRINDELIA VILLARREALII (ASTERACEAE: ASTEREAE), A NEW SPECIES FROM NORTHEASTERN MEXICO Guy L. Nesom Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT A new species of Grindelia is described from the Petia Nevada area of southeastern Nuevo Leon: G. villarrealii. It is closely related to G. turnert, also endemic to the Sierra Madre Oriental, and is apparently its evolutionary vicariad. KEY WORDS: Grindelta, Astereae, Asteraceae, New Mexico, Texas Since an earlier conspectus of problematic Mexican Grindelia (Nesom 1990), variation in recent collections from the Sierra Madre Oriental of Nuevo Leon and Coahuila has received careful attention. Almost all of them have been placed within the bounds of taxa delimited earlier, but one additional species must be recognized. Grindelia villarrealii Nesom, sp. nov. TYPE: MEXICO. Nuevo Leon: Mpio. Zaragoza, ca. 2-3 mi N of Siberia on road to Zaragoza from San Antonio de Pena Nevada; broad valley, ca. 2500 m, area of oaks and aspen at the bottom (N-facing margin) and agave-scrub on the SW-facing slope, the Grindelia around the aspen grove, scattered but common at base of the slope in deep soil; 26 Aug 1989, G. Nesom 7149 with M. Carranza, J. Norris, and J. Villarreal (HOLOTYPE: TEX; Isotypes: ANSM,MEXU). Grindeliae turneri Nesom duratione perenni, caulibus glabris vel glabratis, foliis non-punctatis, et acheniis monomorphis rasilibus vel tantum sculptis similis sed foliorum dentibus induratis non- glandulosisque et aristis pappi brevioribus carinatisque marginibus ciliolatis differt. 264 Nesom: New Grindelia from México 265 Short lived perennial or biennial herbs from a distinct taproot. Stems erect or basally ascending, 3-5 cm tall, ca. 5-8 stems arising from the base, each with 1-3 branches above the lower third, glabrous or with a few small, scattered hairs, eglandular. Leaves not punctate, glabrous to minutely pu- berulent with glands and barely perceptible hairs, margins serrate with blunt to acute, eglandular, white indurated teeth, not scabrous, the basal and lower cauline 5-8 cm long, petiolate with obovate blades, the upper cauline 15-30 cm long, 5-9 mm wide at midstem, oblong oblanceolate to oblong, epetiolate, subclasping to clasping, slightly or not at all auriculate, only slightly reduced upwards and continuing to immediately beneath the heads. Heads 13-15 mm wide, solitary; phyllaries linear-lanceolate, green in the upper 1/2-1/4, not punctate, with apices erect or spreading, in 3-4 strongly graduated series, the inner 8-9 mm long, the outer 1/2-1/3 as long. Ray flowers 20-31, yellow, the corollas (including tube) 11-13 mm long, ligules distinctly coiling. Disc corol- las 5-6 mm long, abruptly ampliate in the upper half. Achenes 3.0-3.5 mm long, monomorphic, somewhat 4 angled but compressed, the fruit wall slightly longitudinally rugose at maturity; pappus awns 2, with distinctly scabrous- ciliate margins and a narrow keel at least on the lower third, easily caducous, about as long as the disc corollas. Known only from the type collection. The new species is named for Jose Villarreal, Curator of Herbarium ANSM in Saltillo, in recognition of his continuing studies and valuable collections of the flora of northeastern México. Grindelia villarrealii apparently is most closely related to G. turnert. The two species are similar in their perennial duration, glabrous to glabrate stems, nonpunctate, nearly glabrous to minutely glandular puberulent leaves, and monomorphic, barely sculptured achenes. The new species differs (from G. turnerz) in its leaves with indurated, nonglandular teeth (vs. glandular) and its shorter, keeled pappus awns with scabrous-ciliolate margins (vs. longer than the disc corollas, unkeeled, with smooth margins). Grindelia turnert is restricted to large valleys immediately north and northwest of Cerro Potosi (Nuevo Leon) and is separated by about 130-140 kilometers from the locality of G. villarrealiz. Other pairs of taxa in various families with similar geographic distributions are known to be related as evolutionary vicariads (McDonald 1992). Grindelia villarrealii and G. turneri are peripherally related to the “G. ozylepis E. Greene group” (Nesom 1990) but differ in their montane habi- tats (vs. low elevation), minutely puberulent foliar vestiture (vs. completely glabrous), and abruptly ampliate disc corollas (vs. tubular). The only other species of Grindelia besides G. villarrealit known from the Pena Nevada area are G. obovattfolia S.F. Blake and G. greenmanti Steyerm. The first differs from G. villarrealii in its rhizomatous habit, lightly villous stems, mostly obo- vate leaves with gland tipped teeth, and phyllaries with linear, sharply reflexing to nearly coiling apices; the second differs most conspicuously from G. villar- 266 PHYTOLOGGIA volume 73(4):264-266 October 1992 realit in its stipitate glandular leaves, villous stems, leaves with gland tipped foliar teeth, and more herbaceous, nearly equal phyllaries. Grindelia villarrealit is also at least superficially similar to G. inulotdes Willd., which occurs in central Nuevo Leon, although its center of distribution is much further south (Nesom 1990). The latter species differs most promi- nently from G. villarrealit in its villous stems, leaves with distinctly sharp pointed teeth, the upper cauline strongly reduced and triangular lanceolate to linear, its shorter (4-5 mm long) disc corollas, achene walls with a strong tendency to produce transverse incisions near the apex, and smooth edged pappus awns. ACKNOWLEDGMENTS I thank Dr. B.L. Turner and Dr. T.P. Ramamoorthy for their review of the manuscript. LITERATURE CITED McDonald, A.J. 1992. Phytogeography of the alpine-subalpine flora of north- eastern Mexico. In T.P. Ramamoorthy, R. Bye, A. Lot, & J. Fa (eds.), Biological Diversity of Mexico: Origins and Distribution. Oxford Press, New York, New York. Nesom, G.L. 1990. Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae). Phytologia 68:303-332. Phytologia (September 1992) 73(3):267-269. LAENNECIA SPELLENBERGII (ASTERACEAE: ASTEREAE), A NEW SPECIES FROM DURANGO, MEXICO Guy L. Nesom Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT Laennecia spellenbergii, sp. nov., is described from two localities in Durango, México, separated by more than 250 kilometers. It is most closely related to other Laennecia species of northwestern Mexico with eglandular, woolly leaves with nonclasping bases. KEY WORDS: Laennecia, Asteraceae, Astereae, México Recent collections by R.W. Spellenberg have brought to light a previously undescribed species of Laennecia. The genus has recently been treated by Nesom (1990a) with the subsequent addition of another species (Nesom 1990b). The species described here is the seventeenth in the genus and forms part of a species group that has radiated almost entirely in northwestern México. The plants of this group are characterized by a densely and persistently woolly, eglandular vestiture, leaves that are nonclasping at the base, relatively large, often glandular achenes, and a large number of pappus bristles. Laennecia spellenbergii Nesom, sp. nov. TYPE: MEXICO. Durango: Mpio. Suchil, ca. 47 air km SSW of Vicente Guerrero on road to Las Mar- garitas, on the Reserva de la Biosfera “La Michilia,” on general S slope of Cerro Blanco, 2590 m, with Quercus cf. hartwegit, shrubby oaks, Pinus, Dasylirion, Arctostaphylos, Scleria, and grasses, 23 Jul 1990, Spellenberg 10285 with S. Gonzalez E. (HOLOTYPE: TEX!; Isotypes: distributed from NMC to ARIZ,CIIDIR IEB,MEXU!,NMC,NY, and UC). Laenneciae chthuahuanae Nesom similis sed capitulis majoribus floribus numerosioribus, floribus radii biseriatis, acheniis minoribus, acheniis radii stipitatis, et glandibus achaeniorum ad apicem fasci- culatis differt. 267 268 P:HYCED EO; GLIA volume 73(3):267-269 September 1992 Perennial, fibrous rooted herbs, the stems, leaves, and phyllaries densely and persistently white woolly, eglandular. Stems erect, 15-30 cm tall, with 1-3 branches in the upper third. Leaves persistently woolly above and beneath, the basal persistent but withering by flowering, oblanceolate-obovate, 1-3 cm long, 4-8 mm wide, entire or with 1-2(-3) pairs of mucronate teeth on the distal half, the cauline linear to linear-oblanceolate, 10-19 mm long, 1-3 mm wide, with a thick, terminal mucro, entire, strictly ascending, not basally clasping or ampliate. Heads hemispheric, 10-13 mm wide (pressed), solitary on bracteate, ascending-divergent peduncles; phyllaries narrowly elliptic-lanceolate with an abruptly and broadly acute apex, with a green midregion and hyaline, dis- tinctly purple margins, in 3-4 strongly graduated series, the inner 7-8 mm long, the outermost 3-4 mm long. Ray flowers pistillate, 55-70 in 2 series, the ligules white, 2-3 mm long, 0.5-0.8 mm wide, conspicuous and exceeding the involucre. Disc flowers hermaphroditic, numerous, the corollas gradually ampliate, ca. 4 mm long; style branches with linear-triangular collecting ap- pendages 0.5 mm long. Achenes glabrous except for a dense cluster of resinous glands at the very apex, obovate, strongly flattened with 2, thickened, lateral ribs, 1.9-2.0 mm long, 0.6-0.8 mm wide, the ray achenes with a prominent, cylindric-stipitate base 0.2 mm long; pappus of ca. 40-65 barbellate bristles 4.0-4.5 mm long, with an outer series of slightly flattened bristles or linear scales 0.4-0.8 mm long. Additional collection examined: MEXICO. Durango: Mpio. Santiago Pa- pasquiaro, on the road to Topia and Canelas, 96 km W of the jct with the road from Santiago Papasquiaro to Tepehuanes, 21 km W of Altares, 38 km E of El Ojito de Camellones; canyon, pale powdery and rocky S-facing slope, with pine, Arbutus, Quercus macvaughit, and Q. coccolobifolia, 28 Jun 1992, R.W. Spellenberg 11027 (TEX,MEXU). Plants of Laennecia spellenbergii are fibrous rooted and produce relatively large heads with two series of conspicuously ligulate ray flowers. In these features, they are similar to L. confusa (Cronq.) Nesom, but the latter differs in (1) glabrescent upper leaf surfaces that quickly become distinctly green glabrate in contrast to the persistently woolly lower surfaces, (2) small achenes (1.0-1.8 mm long) with thin ribs and almost always with nonglandular duplex hairs as well as glands, the glands usually scattered over the whole achenial face, and (3) a smaller number (14-22) of pappus bristles. Laennecta spellenbergit is probably most closely related to L. pimana Ne- som & Laferriere and L. chihuahuana. All three species produce large, thick ribbed achenes that are glandular but otherwise glabrous. Both differ from the new species in their production of a taproot, smaller heads with fewer flowers, ray flowers in a single series, and ray achenes without a stipitate base. Laen- necta prmana differs further in its eligulate ray flowers; L. chihuahuana differs further in its larger achenes with achenial glands scattered over the whole face. Nesom: New Laennecia from México 269 ACKNOWLEDGMENTS I thank Billie Turner and Rich Spellenberg for their review of the manuscript. LITERATURE CITED Nesom, G.L. 1990a. Taxonomy of the genus Laennecia (Asteraceae: Aster- eae). Phytologia 68:205-228. Nesom, G.L. 1990b. Laennecia mapimiana (Asteraceae: Astereae), a new species from northwestern México. Phytologia 69:348-350. Phytologia (October 1992) 73(4):270-273. A NEW SPECIES OF DEPREA (SOLANACEAE) FROM VENEZUELA Carmen Benitez de Rojas Instituto de Botanica Agricola, Facultad Agronomia, Universidad Central de Venezuela, VENEZUELA Mahinda Martinez Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT A new species from Venezuela, Deprea paneroi, is described and illustrated, and a taxonomic summary of the other five species of the genus is presented. KEY WORDS: Solanaceae, Deprea, Venezuela Deprea paneroi Benitez & Martinez, sp. nov. (Fig. 1, A-E). TYPE: VENE- ZUELA. Trujillo: Parque Nacional Guaramacal, 2350 m, 30 Nov 1991, Carmen Benitez de Rojas 4320, with Victor Badillo and José Panero (HOLOTYPE: MY; Isotypes: MERF,MO,NY,TEX,VEN). Frutices usque ad 1.5 m alti, omnino dense puberuli glandibus ac trichomatibus multicellularis simplicibusque, ramis dichotome ramosis valde geniculatis. Folia ad apices ramorum ovata. Flores purpurati staminibus luteis. Shrubs 0.7-1.5 m high, stem fistulous, profusely branched, branches persis- tently dichotomous and geniculate, with simple pluricellular hairs and glands throughout, leaves readily deciduous, restricted to the distal portion of the branches. Petioles 0.5-1.7 cm long. Leaves ovate to elliptic ovate, 3.5-9.0 cm long, 1.5-4.5 cm wide, the apices attenuate to abruptly acute, secondary veins 4-5 to a side, the base attenuate to abruptly attenuate with purple spots, un- dulate between principal veins, asperous in fresh, smooth in dried material, 270 Benitez de Rojas & Martinez: New Deprea from Venezuela 271 Figure 1. Deprea paneroi; A. habit; B. flower; C. longitudinal flower section; D. fruit; E. longitudinal fruit section. Based on Benitez, Badillo, & Panero 4320 (MY). 272 PHY TOLOGTA volume 73(4):270-273 October 1992 villous on both surfaces, more so on the veins. Flowers in fasciculated clusters arising from the leaf axils, usually 4 but sometimes reduced to one. Pedicels 4- 8 mm long. Calyx 2-3 mm long, light green, almost white, densely pubescent, tube 1.5-3.0 mm long, 5 lobed, the lobes acute, 0.5-1.0 mm long. Corolla pur- ple, infundibular, 6-12 mm long, pilose externally with glandular hairs except in the portion covered by the calyx, pilose internally, tube 5.0-7.5 mm long, 5 lobed, 2.5-5.0 mm long, lobes reflexed and recurved at anthesis, margins and outer surface densely pubescent. Disc discontinuous, surrounding the ovary. Stamens 5, included, free portion of the filaments 2-3 mm long, adnate por- tion 2-4 mm long, anthers 1.0-2.5 mm long, yellow, dorsifixed, longitudinally dehiscent. Ovary 1.5-1.8 mm long, 1.0-1.2 mm wide, glabrous, style 3.0-4.5 mm long, glabrous, stigma clavate, bilobed, protruding beyond the anthers. Fruit a berry 6.5-10.0 mm in diameter, loosely enclosed by the accrescent calyx 10-15 mm long, 20 mm wide, 8-10 angled, clearly nerved, open apically. Seeds 20-60, ca. 4 mm long and ca. 5 mm wide, reniform, foveolate. Deprea is probably most closely related to Physalis, based on their mutual production of a berry loosely enclosed by the accrescent calyx. Deprea, in contrast to Physalis, produces tubular corollas and the fruiting calyx is not invaginated at the base. The genus has never been the subject of a taxonomic summary, but as presently understood, it comprises the five South American species listed below, in addition to the new one described in the present paper. 1. Deprea ortnocensis (Kunth) Raf., Sylv. Tell. 57. 1838. Physalis orinocensis Kunth, Nov. Gen. & Sp. Pl. 3:12. 1818. Presumably with yellow corollas 12 mm long, apparently restricted to low- land habitats in Venezuela. 2. Deprea sylvarum (Standl. & Morton) A.T. Hunz., Kurtziana 10:25. 1977. Athenaea sylvarum Standley & Morton, Field Mus. Nat. Hist. Publ. Bot. 18:1036. 1938. With pale green corollas ca. 5.5 mm long, from Costa Rica. 3. Deprea glabra (Standl.) A.T. Hunz., Kurtziana 10:25. 1977. Athenaea glabra Standley, Trop. Woods 42:32. 1935. With greenish corollas, these red within, 12 mm long, from Ecuador. Benitez de Rojas & Martinez: New Deprea from Venezuela 273 4. Deprea cardenasiana A.T. Hunz., Kurtziana 10:27. 1977. With whitish corollas 17-22 mm long, from Bolivia. 5. Deprea granulosa (Miers) A.T. Hunz., Bol. Soc. Argent. Bot. 26(1-2):104. 1989. Hebecladus granulosus Miers, London J. Bot. 7:352. 1848. With yellow corollas ca. 10 mm long, from Colombia. Deprea paneroz differs from the other species of Deprea in its dark purple corollas, which contrast with the yellow or greenish yellow corollas typical of the other species. In addition, the dichotomous and geniculate growth and the leaves mostly restricted to the branch apices are not seen elsewhere in Deprea. It occurs in cloud forest at 2000-2800. m above sea level in the Venezuelan Andes (states of Trujillo and Tachira). The species name honors José Luis Panero, who participated in its collection. Additional specimens examined: VENEZUELA. Trujillo: Guaramacal, cerca de Bocono, 2000-2600 m, 20 Nov 1982, Badillo 7723 (MY); Distrito Bocono, Paramo de Guaramacal W of road summit, 2800 m, 28 Apr 1988, Dorr 5016 with Barnett, Cuello, & Diggs (VEN); Boconé-Guaramacal road, 13 km SSE of Bocond, 2750 m, 20 Jan 1978, Luteyn, Lebron-Luteyn, Ruiz T., & Dugarte 5200 (MERF,NY); Cerro Guaramacal, Bocond, bajando ha- cia el caserio de Guaramacal, 26 Nov 1982, Stergios, Aymard, & Smith 4712 (MY,PORT); Paramo de Guaramacal, 1.5 km S of turnoff to microwave sta- tion on road to Las Vegas de Guaramacal, 2850 m, 30 Nov 1991, Panero 2647, Benitez & Badillo 2647(TEX,MY). Tachira: Dto. Junin, Paramo Pata de Judio, 14 Feb 1973, Antonio Ferndndez 1910 (MY); El Hato, carretera a Pregonero, 2700 m, 24 Feb 1968, Lopez P. 1968 (MERF,MY). ACKNOWLEDGMENTS We thank Bruno Manara for his excellent illustration of the new species. Guy Nesom provided the Latin diagnosis, and he, B.L. Turner, and J. Panero kindly reviewed the manuscript. Phytologia (October 1992) 73(4):274-276. EUSTACHYS RETUSA (POACEAE), THE FIRST REPORT IN FLORIDA AND A KEY TO EUSTACHYS IN FLORIDA Stanley D. Jones & J.K. Wipff S.M. Tracy Herbarium (TAES), Department of Rangeland Ecology and Management, Texas A&M University, College Station, Texas 77843-2126 U.S.A. ABSTRACT Eustachys retusa (Lag.) Kunth, Chlorideae:Poaceae, previously un- reported in Florida has been found in the southern coastal plain of the panhandle in Okaloosa County. KEY WORDS: Eustachys, Eustachys retusa, tribe Chlorideae, Poaceae, Florida Eustachys Desv. in Nouv. is composed of ten species, principally of the New World tropical savannas (Clayton & Renvoize 1986). Six species of Eustachys are now found in Florida: Hustachys distichophylla (Lag.) Nees, E. floridana Chapm., E. glauca Chapm., E. neglecta (Nash) Nash, E. petraea (Swartz) Desv., and E. retusa (Lag.) Kunth. Long & Lakela (1971), Wunderlin (1982), Clewell (1985), nor Anderson (1984, 1986, 1988) have listed EF. retusa as occur- — ring in Florida. It has been recorded in Georgia, New York, South Carolina, and Texas (McKenzie et al. 1987). Eustachys retusa can be confused with small or depauperate specimens of FE. distichophylla. Eustachys distichophylla is usually a much larger and more robust plant with more numerous panicle branches, much longer, flexuous spikes, and upper, acute, sterile florets. The following key will separate the taxa of Eustachys found in Florida (modified from McKenzie et al. 1987). KEY TO EUSTACHYS IN FLORIDA 1. Lateral veins of the fertile lemma glabrous. ................... E. glauca 1’ Lateral veins of the fertile lemma pubescent. ................-.see0eee 2 274 Jones & Wipf: Eustachys in Florida 275 2.(1’) Keel of fertile lemma glabrous. .........0.00cscceccceevascsecs 3 3.(2.) Spikelets shorter than 2.1 mm; sterile floret widely cuneate, CGE Seg So Be De DIE er On Ine mnns cescisiteae E. retusa 3’ Spikelets 2.4 mm or longer; sterile floret oblanceolate, acute. E. distichophylla ekeeltar tertile lemma cluinte A: . F205 seca heesee ees loc oerae omer 4 4.(2’) Spikelets shorter than 2.5 mm. ...........-..... E. petraea se ooikeletalonperi tian 2.0 Mis. :c2)a jar teois < oie iain mealies ae 5 5.(4’) Spike usually 1-3; spikelets 3 mm or longer; fertile lemma Swi OG mim OF SNOLCED.. se ofs:a< s:0:srasa.e.2 5 2 pene oe E. floridana 5’ Spikes usually 4-9; spikelets 3 mm or shorter; fertile lemma awa 0-6 emtO0 LONGED. .)/s\-faceic es nein ee emis ee E. neglecta Specimens collected: UNITED STATES. Florida: Okaloosa Co.: 12 July 1991, J.K. Wipff 2108 & S.D. Jones (FLAS,GA,TAES,TEX,SWSL,VDB,US, USF). Northwest corner of Leonard Burnes Road and U.S. 90, between U.S. 90 and the railroad tracks; 10.8 miles (17.3 kilometers) NE on U.S. 90 from its jct. with FL 87, NE of Milton. This taxon was abundant along U.S. 90 in an open disturbed roadside with the soils of the Lakeland-Troup-Alpin association. The site is nearly level at about 200 feet (61 m) elevation with acid sand throughout and a very thick sandy surface layer over a loamy subsoil. The geology of the site is of the Citronelle (Pc) formation; Pliocene series (mid-upper Miocene). Associated taxa include Paspalum notatum Fligge, Cynodon dactylon (L.) Pers., Aristida sp., Eragrostis spp., Richardia brasiliensis Gomes., Senna sp., Rubus sp., Ipomoea quamoclit L., and I. coccinea L. ACKNOWLEDGMENTS We thank Larry E. Brown (SBSC), Gretchen D. Jones, and Robert I. Lonard (PAUH) for their reviews of this manuscript. LITERATURE CITED Anderson, L.C. 1984. Noteworthy plants from north Florida. Sida 10:295- 297. 1986. Noteworthy plants from north Florida II. Sida 11:379-384. 1988. Noteworthy plants from north Florida III. Sida 13:93-100. 276 PLA eT OLE O GulA volume 73(4):274-276 October 1992 Clayton, W.D. & S.A. Renvoize. 1986. Genera Graminium Grasses of the World. Her Majesty’s Stationery Office, London, England. Clewell, A.F. 1985. Gutde to the Vascular Plants of the Florida Panhandle. Florida State University Press, Tallahassee, Florida. Long, R.W. & O. Lakela. 1971. A Flora of Tropical Florida. University of Miami Press, Coral Gables, Florida. McKenzie, P.M., L.E. Urbatsch, & C. Aulbach-Smith. 1987. Eustachys carib- aea (Poaceae), a species new to the United States and a key to Eustachys in the United States. Sida 12(1):227-232. Wunderlin, R.P. 1982. Guide to the Vascular Plants of Central Florida. University Presses of Florida, Tampa, Florida. Phytologia (October 1992) 73(4):277-280. MATELEA MAGALLANESII, A NEW SPECIES OF ASCLEPIADACEAE FROM WESTERN MEXICO Emily J. Lott Herbarium, Department of Botany and Plant Sciences, University of California, Riverside, California 92521 U.S.A ABSTRACT A striking new species of Matelea from western México is described and illustrated. It is perhaps most closely related to M. pilosa (Benth.) Woods. KEY WORDS: Matelea, Matelea magallanesii, Asclepiadaceae, Jalisco, México Continuing work on a guide to the flora of the Chamela Bay region of Jalisco, México, necessitates the publication of a number of new species from the area, including the following: Matelea magallanesii E.J. Lott, sp. nov. Fig. 1. TYPE: MEXICO. Jalisco: Mpio. La Huerta, Estacion de Biologia Chamela UNAM, antiguo camino a Nacastillo, [a 8 km al E de la carretera Puerto Vallarta-Barra de Navidad], 19° 30’ N, 105° 03’ W, 24 Sep 1981, (fl & fr), E.J. Lott 552 (HOLOTYPE: MEXU; Isotypes: MICH,MO). Matelea magallanesii E.J. Lott; species insignis floribus viridu- lus majusculis (ad 6 cm diam), lamina petali triangularis, longj- attenuatus, coronae echinatus. Plants twining vines. Stems woody at the base, to 1 cm diam, with a corky, somewhat winged, pale brown bark, herbaceous above, whitish to yel- lowish pubescent throughout with a mixture of straight multicellular trichomes mostly 1-3 mm long and short glandular trichomes 0.05 mm long. Leaf blades 2.5-10. x 1.0-5.5 cm, ovate, narrowly cordate; the upper surfaces dark green, moderately and evenly short hirsute; the lower surfaces paler, short hirsute 277 278 PHY POL6.GCA4A volume 73(4):277-280 October 1992 Figure 1. Flower of Matelea magallanesii (Lott 3879). White line = 1 cm. Lott: New Matelea from México 279 with multicellular trichomes up to 1 mm or more long and minutely glandu- lar, the hairs similar to those on the stems, trichomes coarser and denser on the veins, tending to be appressed; secondary veins 4-5 pairs, somewhat prominent - beneath, yellowish; apicies acuminate, base deeply cordate, the lobes straight to convergent, with 0-4 fingerlike yellowish glands at the junction of petiole and blade; margins lightly ciliate; petioles (20-)30-60 x 1.0-1.5 mm, the indument as on the stems. Inflorescences axillary, 1-4 flowered, loose cymes, 0.5-1.5 times the length of the petioles of subtending leaves, the primary peduncle 1.5-4.0 cm long, the indument of short trichomes mostly 0.5-1.0 mm long and minute glandular trichomes ca. 0.050-0.075 mm long; bracts linear-lanceolate, 8-10 x ca. 1 mm, acute; pedicels 0.8-2.0 cm long. Flowers 3.5-6.0 cm diam. Calyx lobes 8-15 x 1.5-3.0 mm, lanceolate, the apex acuminate, the base slightly im- bricate, with 2-3 small white glands between each pair of lobes. Corolla pale green with purplish tinges, minutely and inconspicuously puberulent through- out, the tube shallowly and broadly campanulate-rotate, with darker green veins extending onto the corolla lobes and becoming somewhat reticulate; 6-8 mm (fresh) from base to sinus, the limb scarcely distinct, the lobes convolute in bud, (20-)25-30 x 6-9 mm, widely spreading, narrowly triangular, long at- tenuate to an acuminate apex, whitish on the margins. Corona exceptionally ornate, exceeding the corolla tube; the free portion of the corona lobes ca. 2 mm long, basically concave in outline from above, each lobe with two reflexed filiform appendages ca. 2 mm long. Anther head with ornate, callous, echinate, bihorned appendages ca. 4 mm wide, exceeding the stigma apex, free above, adnate to the corona lobes below and connivent with them above, glabrous, dark reddish purple; each anther with a broad dorsal stripe ca. 0.9 mm wide, minutely papillose, pale yellowish-brown, apical anther appendages hyaline, obtuse, covering ca. 1/2 of apex, each ca. 1.5 mm wide. Gynostegium 1 mm x 2.5-4.0 mm at apex, stipitate, white, the apex white, pentagonal, concave. Pollinia horizontal, pollen sacs ca. 0.5 x 0.3 mm, subtriangular, somewhat excavated at the tip; corpusculum sagittate, reddish brown, 0.4 x 0.2 mm. Follicles 10-15 cm long, narrowly fusiform, smooth, glaucous. Mature seeds unknown, immature seeds 4 x 2 mm, obovate, the apex truncate, more or less smooth, pale brown, margins paler and erose; coma white. Additional specimens examined: MEXICO. Jalisco: Mpio. La Huerta, Estacion de Biologia Chamela UNAM, Camino Antiguo X Vereda Chachalaca, 6 Aug 1981 (fl), S.H. Bullock 978 (Est. Biol. Chamela,MO); same locality, an- tiguo camino a Nacastillo, [a 8 km al E de la carretera Puerto Vallarta-Barra de Navidad], 19° 30’ N, 105° 03’ W, 2 Aug 1983 (fl & fr), E.J. Lott 1782 (MEXU); same locality, 10 Aug 1983 (fl), E.J. Lott 1812(MEXU); same locality, Camino Entrada, 17 Jul 1984 (fl), J.A. Solis Magallanes 4255 (MEXU); camino a La Rumorosa, km 60 de la carretera Puerto Vallarta-Barra de Navidad, 12 Oct 1982 (fl), E.J. Lott & R. Herndndez M. 1464 (UCR); same locality, 28 Sep 1985 (fl & fr), M.G. Ayala 245 (ENCB,F,MEXU,TEX); camino a Playa La 280 PHYTO L.O GIA volume 73(4):277-280 October 1992 Virgen, a 3.8 km al NO de la entrada a la Estacion de Biologia Chamela, 2 Oct 1985 (fl), B.J. Lott et al. 2642 (MEXU,MICH,US); Rancho Cuixmala, 27 Aug 1988 (fl), G. Castillo C. et al. 5367 (XAL); same locality, 22 Aug 1991 (fl & fr), E.J. Lott 3864 (CAS,RSA,UCR); same locality, 19° 23’ N, 104° 59’ W, 22 Aug 1991 (fl), B.J. Lott & T. Upson 3879 (FLAS,K,MO,NY,UCR). The new species is named in honor of J. Arturo Solis Magallanes, now of the Reserva Joyas de Manantlan, Jalisco, outstanding collector of the flora of the Chamela coast. Matelea magallaneszi is thus far known only from coastal Jalisco between Chamela and Cuitzmala, Jalisco, where it is uncommon. It is usually found among herbs and shrubs at the edge of clearings in tropical dry forest from near sea level up to about 200 m. Matelea magallanesiit cannot be placed with certainty in any of Wood- son’s (1941) subgenera; understanding of its relationships must await further taxonomic study. However, the new species does resemble M. pilosa (Benth.) Woods., which differs in its much smaller purplish flowers with shorter, blunter corolla lobes, and much simpler floral structure. Matelea gonoloboides (Robins. & Greenm.) Woods., of Chiapas, can be distinguished from M. magallanesz by its much smaller, purplish flowers in umbellate inflorescences. Matelea ma- gallanesi can be distinguished from other Chamela mateleas, especially M. quirost (Standl.) Woods., by its large green flowers, and longer and narrower fruit. ACKNOWLEDGMENTS W.D. Stevens first pointed out this and several other new Chamela As- clepiadaceae during routine determinations of our collections at MEXU. I thank A.C. Sanders and E. Sundell for their review and helpful comments on the manuscript., Tim Upson for the photograph, and F. Chiang C. for the Latin diagnosis. Field work at Rancho Cuixmala in 1991 was supported by Fundacion Ecologica de Cuixmala through the I.U.C.N. LITERATURE CITED Woodson, R.E., Jr. 1941. North American Asclepiadaceae. I. Perspective of the genera. Ann. Missouri Bot. Gard. 28:193-244. Phytologia (October 1992) 73(4):281-301. TAXONOMIC OVERVIEW OF THE GENUS COLOGANIA (FABACEAE, PHASEOLEAE) B.L. Turner Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT A taxonomic overview of the mostly Mexican genus Cologania is provided. Ten species are recognized, one of which, C. hintoniorum B. Turner, is described as new. All of these occur in México, but two (C. broussonettst and C. procumbens) extend throughout much of South America. Cologania broussonettii (including C. ovalifolia) also extends into the southwestern U.S.A.; atypical populations of this have been called C. pallida. Complete synonymy is given for all of the taxa and, when appropriate, comments are made regarding typification. A key to the ten species is constructed along with maps showing their distribu- tion. KEY WORDS: Fabaceae, Phaseoleae, Cologania, México Cologania is a widespread highly variable genus of perennial, mostly twin- ing vines or less often low, trailing to erect herbs. The species are largely confined to montane habitats extending from the southwestern U.S.A. to Ar- gentina in South America. México is clearly the center of diversity for the genus, all of the species confined to, or emanating out of this region (cf. Fig- ures 2-5). Natural variability among species in the genus has been compounded by the occurrence of cleistogamy, especially when following interspecific hy bridiza- tion. This has been nicely documented by Fearing (1959) in his unpublished monographic study of the genus. After obtaining his doctorate and joining the biological faculty at Trinity University, San Antonio, Texas, Dr. Fearing essentially ignored Cologania, his passport to Academia. This in spite of the fact that his thesis was a sound production for its time, being based upon con- siderable field work and examination of several thousand specimens on loan from eighteen or more institutions. 281 282 PHYTOLOGIA volume 73(4):281-301 October 1992 In his doctoral thesis Fearing recognized ten species of Cologania, one of these, C. cordata, newly proposed. These were arranged numerically, according to their perceived morphological nearness, as follows. 1. C. procumbens 6. C. hirta 2. C. cordata 7. C. biloba 3. C. capitata 8. C. pallida 4. C. angustifoha 9. C. broussonetti (with two varieties) 10. C. ovalifolia 5. C. obovata It is unfortunate that Fearing’s study was not published, mainly because he had made considerable taxonomic sense out of a jumble of specimens from over a large region. He attempted to resolve the nomenclature by examination of type materials and constructed distribution maps for all of the included taxa. The only individual to add significantly to the taxonomy of Cologania since his study has been McVaugh (1987), who in treating Cologanta for his Flora Novo-Galiciana recognized most of Fearing’s taxa, including C. cordata Fearing er McVaugh. He did not, however, recognize Fearing’s submergence of C. jaliscana into C. angustifolia, nor did he accept the recognition of C. ovalifolia, at least as occurring within the area of Novo-Galiciana. Numerous (1.¢., at least ten or more) workers, over the 30 years since Fear- ing completed his thesis have xeroxed his entire study or else abstracted mate- tial from it. Indeed, it has been about the only source for reliable taxonomic information regarding Cologania, yet none of this is available in published form. Because of this I have taken the opportunity to read critically, once again, his entire thesis, and study all of the collections assembled at LL, TEX since his work, including selected materials at MICH, for the loan of which I am most grateful. In the overview that follows I have attempted to render a reasoned and just account of the group as if I had studied the genus from my 40+ years of taxonomic activity, including field work in the area concerned. My work was made much easier by the considerable accumulation of new ma- terial since Fearing’s study, but more so by the careful manner in which he documented typification: clear black and white photographs of most of the types concerned. In my present revised and updated account of Fearing’s work I also rec- ognize ten species, but some of his proposed taxa have been submerged, one or two resurrected, and one newly described taxon proposed. The following key and comments will account for the taxa recognized; in addition, I have provided distribution maps for all of the North American taxa based upon both Fearing’s records and those assembled since. Where my treatment differs from those of Fearing or McVaugh, I have explained my stance. Additionally, I have given a formal account of the names Turner: Taxonomic overview of Cologania 283 proposed for the genus, including typification, all of this looked at afresh and every attempt made to recognize meaningful morphogeographical units (1.e., biological species as inferred from morphological, ecological, and geographical data). Fearing’s study provided both meiotic and somatic chromosome counts for the following taxa of Cologanza: C. angustifolia n = 22 pairs 2n= 44 C. broussonetti n = 22 pairs 2n= 44 C. obovata 2n= 44, 88 Cologanta Kunth Perennial usually twining herbaceous vines or, less often, merely erect or trailing herbs. Tap roots large, ligneous or woody, fusiform or clavate, deeply buried and usually forming new stem growth each year from the crown. Leaves mostly trifoliate, less often unifoliate, rarely 5 foliate, the petiolule of the mid- dle leaflet of trifoliate leaves longer than those of lateral leaflets. Stipules linear to asymmetrically lanceolate. Flowers axillary or terminal, solitary, in pairs, or several or more in congested or loose subfasciculate clusters, or clearly race- mose, the flowers bracteate or not. Calyx (in chasmogamous flowers) tubular, gibbous at the base, the sepals 5, united for 2/3 of their length, the upper two lobes variously united. Corolla purple to magenta, or reddish to reddish purple, the banner prominent, usually notched at the apex, the claw ca. 1/3 the length of the blade; wings auriculate, often sharply so, the claw 1/2 as long or more than the blade; keel auriculate, the claw ca. as long as the blade. Stamens 10, diadelphous, enclosed in the keel. Style filiform, gradually curved so as to form an angle of 10-60 degrees with the extended axis of the ovary. Fruit (from chasmogamous flowers) a linear to falcate pod, at maturity terete and usually producing 6-12 seeds. Cleistogamic flowers and fruits are usually quite different from those of chasmogamous flowers and fruits. In general, cleistogamic flowers are much reduced throughout, the calyx tube markedly narrowed below, scarcely gibbous and fertilization occurs at an early devel- opmental stage, the resulting pods also much reduced and atypical. Base chromosome number, z = 11. Lectotype species, Cologania angustifolia Kunth. Key to species (based upon chasmogamous flowers) MP eIGCA VES TINTON Iat ey meets so oie otere ec alers ci oke ole castadehaycte aie oyeretare eters crencrers state 2 284 PAY TO 050'G. PA volume 73(4):281-301 October 1992 2. sheaves cordate? Jaliaros Gidea: oses ladelseas 2s « ode C. cordata 2. Leaves linear lanceolate to lanceolate, or elliptic lanceolate to elliptic, rarely broadly ovate but never cordate; widespread. C. procumbens 1. Treaves 3(-S) foliolates, «nc eo.cc0cis ovis veieen's » nisie.cie sso 3:05 sepa 3 3. Leaflets linear to linear lanceolate, rarely narrowly ovate, mostly 3 times longer than wide or more. ...:.<0.6<00000+2 00006 senses 4 4. Flowers arranged in axillary bracteate clusters of 5-10, the pedicels 2-4 mm long; Nayarit. ......... she uaa eats C. capttata 4. Flowers single in the axils or in groups of 2-3, the pedicels mostly 5-10 mm long; widespread. ............ C. angustifolia 3. Leaflets ovate to obovate or oval, mostly 1.0-2.8 times as long as WAGs shisha es aes reiczctss essieraice ae oka sis ais Sbin o:6 wietsnels Sue's ojos «ls er 5 5. Petioles 1-5 mm long; leaflets sessile or nearly so; stems procum- bentvor trailing, not twining: -... #..(.02%./.. 24 eee C. obovata 5. Petioles 10 mm long or more; leaflets clearly stalked; stems LWA Ac. See ane tees Ore dt eae a eee NA isc - 6 6. Flowers borne in distinct racemes; pedicels subtended by distinct ‘bracts... sss... <3. «ess 2 4s sn8 a eee 7 7. Banners red, 30-40 mm long (measured from the base of calyx to banner tip); bracts of the raceme ovate, 12-14 mim long, 3-4 mm wide. «25. 2.06<--0 eis 0-0 ss eee 8 8. Leaflets sharply acute; near Michoacan and Guer- POT Osu pisofet cnet onesie euch hs eae choeeiatecd: C. hintoniorum 8. Leaflets broadly obtuse to rounded; Oaxaca. C. hirta 7. Banners lavender purple to violet, 18-30 mm long; bracts of the raceme mostly linear to linear lanceolate, 4-6 mm long,,0.5-1.0:mm wide. ...25.. «3. 20 ssese eee 9 9. Racemes mostly 6-12 cm long, evenly floriferous, the flowers mostly 20-25 mm long (measured from the base of calyx to apex of banner); Durango, Nayarit, and Jalisco along western sierras. ........... C. racemosa 9. Racemes mostly 1.5 cm long, unevenly floriferous, the flowers mostly 26-30 mm long; Hidalgo to Oaxaca along eastern sierrag. |... ies. <5 cmc ieee C. biloba 6. Flowers axillary, mostly 1-2 or in groups of 3-4, but never distinctly racemose; pedicels without bracts. .......... 10 10. Leaves pallid (pale green); leaflets mostly 1-3 cm long; U.S.A. and closely adjacent México. ......... C. pallida Turner: Taxonomic overview of Cologania 285 10. Leaves green to dark green, never pallid; leaflets mostly 3-10 cm long; widespread. ..... C. broussonetti COLOGANIA ANGUSTIFOLIA Kunth. Distribution map Figure 2. Cologania angustifolia Kunth, Mimoses 209. pl. 58. Jun 1824; H.B.K., Nov. Gen. & Sp. Pl. 6 [folio]: 325; 6 [quarto]:44. Sep 1824. Amphicarpaea angustifolia (H.B.K.) Taubert, in Engler & Prantl, Natur. Pflanzenf. 33:359. 1894. TYPE: MEXICO. Hidalgo: “prope La Magdalena, be- tween Real del Moran and Actopan,” May-Jun 1803, Humboldt & Bon- pland 4115 (HOLOTYPE: P; Photoholotype: TEX!). Cologanta intermedia H.B.K., Nov. Gen. & Sp. Pl. 6 {quarto]:414. Sep 1824. TYPE: MEXICO. Hidalgo: “Crescit prope Real del Monte,” May- Jun 1803, Humboldt & Bonpland 4080 (HOLOTYPE: P; Photoholotype: TEX!). Cologania mezicana Zucc., Abhandl. Akad. Muench. 1:339, pl. 14 & 15. 1832. Neurocarpon mezicanum (Zucc.) Steud., Nomenclator Botanicus, ed. 2, 2:193. 1840. TYPE: “Crescit in imperii mexicani regionibus calidioribus,” w/o date, D. Keerl s.n. (HOLOTYPE: M, not examined, but as noted by Fearing, the description and illustrations leave little doubt as to its synonymy here). Galactia radicata DC., Prodr. 2:238. 1825. TYPE: MEXICO. State not known: Based upon a collection of Sessé & Mogino s.n. (Sessé & Mocino illustration: G; Photo of type illustration: TEX!). This name was not accounted for by Fearing, but the illustration leaves little doubt as to its identity. Cologania longifolia A. Gray, Pl. Wright. 2:35. 1853. TYPE: U.S.A. New Mexico: Grant Co., “Hills near the copper mines,” Aug 1851, C. Wright 959 (LECTOTYPE [selected here]: GH!; Photolectotype: TEX!). Gray cited several of Wright’s collection numbers in his protologue, assign- ing subscripts to each and referring to these as leaf “forms.” Fearing annotated Wright 959a as “holotype,” which is redesignated here as a lectotype. Cologania martia S. Wats., Proc. Amer. Acad. Arts 17:345. 1882. TYPE: MEXICO. San Luis Potosi: “Sandy places about San Luis Potosi,” w/o date, Schaffner 802 (LECTOTYPE [selected here]: GH!). In the protologue Watson cited two additional collections, 191 and 193 of Parry & Palmer. 286 PHY TOLOGEA volume 73(4):281-301 October 1992 banner keel NAA sre) Wd lena ‘e PSS > NN = ’ pe Ay Fig.1. Cologania hintoniorum, from holotype. Turner: Taxonomic overview of Cologania 287 Figure 2. Distribution of Cologania angustifolia in México (inset, U.S.A.). 288 PHY TOLOGIA volume 73(4):281-301 October 1992 Cologania confusa Rose, Contr. U.S. Natl. Herb. 8:37. 1903. TYPE: U.S.A. Texas: El Paso Co., 1851, C. Wright 958 (HOLOTYPE: US; Photoholo- type: TEX!; Isotype: GH!). Cologania longtfolia A. Gray var. stricta M.E. Jones, Contr. West. Bot. 12:12. 1908. TYPE: MEXICO. Chihuahua: “near Chuichupua (Chuhuichupa],” Sep 1903, M.E. Jones s.n. (HOLOTYPE: POM, not located). Fearing, unable to locate the type at POM, suggested that there was some labeling error and that the sheet concerned might have been collected by Jones in Soldier Canyon, 16 Sep 1903 (CAS,DS,F,US). From among these he selected the CAS specimen as a lectotype; a lectotype, if needed, should be housed at POM. Cologania pringle: S. Wats, Proc. Amer. Acad. Arts 25:147. 1890. Not Colo- gania pringle: S. Wats. (1888). Cologania jaliscana S. Wats., Proc. Amer. Acad. Arts 26:136. 1891. TYPE: MEXICO. Jalisco: hillsides near Guadalajara, 2 Jul 1889, C.G. Pringle 2788 (HOLOTYPE: GH!; Pho- toholotype: TEX!; Isotypes: F,MO,UC,US). Fearing noted that the name Cologania confusa had been applied to plants which are “somewhat intermediate between C. pallida and C. angustifolia.” He also noted that “Cologanta jaliscana is morphologically intermediate between C. broussonetti and C. angustifolia.” I agree with his assessments but believe plants relegated to C. jaliscana (including the type) are morphologically closer to C. broussonettiz and have therefore positioned these in synonymy with the latter. McVaugh (1987) retained C. jaliscana as a good species, believing such plants to have a limited range in central and eastern Jalisco, and that these could be distinguished from typical C. angustifolia by leaf shape and pubescence. The leaf shape and pubescence found in “C. jaliscana” are much like that found in C. broussonettzi and I have little hesitation in accepting Fear- ing’s overall evaluation (1.e., of hybrid origin) but believe its total characters are more those of C. broussonettit. Fearing recognized a var. stricta, based upon Cologania longifolia var. stricta M.E. Jones, but I take these to be but early sprouting, erect forms of C. angustifolia, before the plants begin to twine. Such forms occur through most of the range of C. angustifolia and appear to have no other characters to distinguish these from the more typical twining forms. Fearing noted that the name Cologania intermedia has been applied to plants “which exhibit characters intermediate between C. angustifolia and C. broussonettit,” which appears to be the case. He also noted that C. longitfo- ha (largely recognized by its glabrate upper leaf surfaces) appears to be but sporadically occurring forms of C. angustifolia. As treated by Fearing, Cologaniza angustifolia is a widespread, highly vari- able taxon. Its infraspecific variation has probably been compounded by oc- Turner: Taxonomic overview of Cologania 289 casional interspecific hybridization with other taxa. Indeed, Fearing has doc- umented natural hybridization between C. angustifolia and C. obovata in the area west of Cd. Durango where the two species grow together (documentary vouchers on file at TEX). He observed a wide range of populational pheno- types along a 56 km transect along highway 40. No doubt the locally vari- able, but seemingly stabilized, populations reflect the effects of cleistogamy: following hybridization and presumably some backcrossing, cleistogamic (self pollinating) forces act to form local, rather uniform populations. Indeed, af- ter examining numerous herbarium sheets of Cologania over a wide range of habitats, I surmise that cleistogamic seed production probably exceeds that of chasmogamous seed production. Cleistogamic flowers and fruits are readily distinguished from chasmogamous flowers and fruits, both by size and shape. Regardless, I suspect that any time two species of Cologania grow together or near one another, an occasional hybrid or backcross might be expected. Populations derived from such intermixing need not be recent, for ancestral hybridization with cleistogamic stabilization of this or that genotypic pool is more likely to be the rule than the exception. COLOGANIA BILOBA (Lindl.) Nicholson. Distribution map Figure 3. Cologania biloba (Lindl.) Nicholson, [Il Dict. Gard. 1:363. 1887. BA- SIONYM: Glycine biloba Lindl., Bot. Reg. 17:pl. 1418. 1831. TYPE: MEXICO. Type grown from Mexican seeds transmitted by George Ak- ermann to Mr. Tate in 1827, and brought to flower in the greenhouse. Fearing did not examine type material, nor have I, but the original de- scription and its accompanying illustration leave little doubt as to its identity. Cologania purpurea Mart. & Gal., Bull. Acad. Roy. Sci. Bruxelles 10:191. 1843. TYPE: MEXICO. Hidalgo: “dans les bois de Regia, pres de Real del Norte,” 6500 ft, Jun-Oct 1840, H. Galeotti 3346 (HOLOTYPE: BR; Photoholotype: TEX!). Cologania nelsoni Rose, Contr. U.S. Natl. Herb. 8:40. 1903. TYPE: MEX- ICO. Oaxaca: mountains about Yalalag, 1300 m, 1 Aug 1894, F.W. Nelson 976 (HOLOTYPE: US!). Cologania grandiflora Rose, Contr. U.S. Natl. Herb. 8:41. 1903. TYPE: MEXICO. Distr. Federal: valley of México, Aug 1896, C.G. Pringle 7264 (HOLOTYPE: US; Photoholotype: TEX!; Isotypes: F,GH). The seed from which the type of Cologania biloba was grown apparently came from the environs of México City, or perhaps elsewhere along the eastern 290 PHY TOLOGIi“ volume 73(4):281-301 October 1992 Figure 3. Distribution of Cologania biloba (closed circles), C. hintontorum — (closed squares), C. hirta (open squares), and C. racemosa (open circles). Turner: Taxonomic overview of Cologania 291 sierras. I could not locate information relating to the whereabouts of George Akermann in 1827, at least the plant illustration along with the type descrip- tion matches well material from the eastern sierras, but not that of material here referred to as C. racemosa or C. hintoniorum. From the former it differs in having longer corollas; from the latter by its violet or purple corollas (vs. red). Fearing (1959) positioned Cologania grandiflora within his concept of C. ovalifolia (= C. broussonetti of the present treatment), but the type appears to be in all ways like C. biloba, except that the raceme is much shortened so as to superficially resemble the axillary flowers characteristic of C. broussonettit. Other than the types cited above, I have examined the following collec- tions: MEXICO. Morelos: barrancas, Cuernavaca, 28 Jul 1896, Pringle 7250 (MICH). Tlaxcala: Amaxac de Guerrero (near Sta. Cruz), 20 Aug 1944, Hernandez X. s.n. (LL). COLOGANIA BROUSSONETTII (Balb.) DC. Distribution map, Figure 4. Cologania broussonettii (Balbis) DC., Prodr. 2:237. 1825. BASIONYM: Ch- toria broussonettii Balbis, Cat. Taur. 26. 1813. TYPE: CHILE(?). w/o specific locality, collector and date unknown. (HOLOTYPE: TO; Pho- toholotypes: F,GH,TEX!). McVaugh (1987) noted that De Candolle, in his transfer of this species, calls to the fore that Balbis published the present name with a double n; the holotype material, however, is anno- tated with the spelling having a single n, as adopted by most workers. Cologania ovalifolia H.B.K., Nov. Gen. & Sp. Pl. 6:412 [quarto]. Sep 1824. Falcata ovalifolia (H.B.K.) O. Ktze, Rev. Gen. Pl. 3(3):63. 1898. Am- phicarpaea ovalifolium (H.B.K.) Seckt., Fl. Cordoba, Cordoba, 1927-30. TYPE: PERU. Prov. Bracamorencia: “Crescit ad repam flumiris Ama- zonum, prope Tomependam, alt. 200 hex.,” Aug 1802, Humboldt & Bon- pland s.n. (HOLOTYPE: P; Photoholotype: TEX!). Cologania pulchella H.B.K., Nov. Gen. & Sp. Pl. 6:413 [quarto]. Sep 1824. Amphicarpaea pulchella (H.B.K.) Taubert, in Engler & Prantl, Nat. Pflanzenf. Abt. 3(3):359. 1894. TYPE: MEXICO. Michoacan: near Patzcuaro, Sep 1803, Humboldt & Bonpland 4348 (HOLOTYPE: P; Photoholotype: TEX!). Cologania affinis Mart. & Gal., Bull. Acad. Roy. Sci. Bruxelles 10:188. 1843. TYPE: MEXICO. Veracruz: near Mirador, “3,000 pieds,” Jun-Oct 1840, H. Galeotti 3283(HOLOTYPE: BR; Photoholotypes: F,GH,TEX!). 292 PHYTOELO:GiA volume 73(4):281-301 October 1992 Figure 4. Distribution of Cologania broussonetti: in México (inset, popula- tional types referred to as C. pallida). Turner: Taxonomic overview of Cologania 293 Cologamia australis Griseb., 1n Goett., Abh. 19:124. 1874. TYPE: AR- GENTINA. Tucuman: Siambon, Sierra de Tucuman, Feb 1874, P.G. Lorentz & Hieronymus 779 (HOLOTYPE: LIL; Photoholotypes: F,TEX!). Cologania jaliscana S. Wats., nom. nov., Proc. Amer. Acad. Arts 26:136. 1891. Cologania pringlet S. Wats., Proc. Amer. Acad. Arts 25:147. 1890. Not Cologania pringle: S. Wats., 1888. TYPE: MEXICO. Jalisco: hill- sides near Guadalajara, 2 Jul 1889, C.G. Pringle 2788 (HOLOTYPE: GH!; Isotypes: F,MO,UC,US). Cologania grandiflora Rose, Contr. U.S. Natl. Herb. 8:41. 1903. TYPE: MEXICO. Distr. Federal: valley of México, Aug 1896, C.G. Pringle 7264 (HOLOTYPE: US; Photoholotypes: TEX!; Isotypes: F,GH!). Cologania glabrior Rose, Contr. U.S. Natl. Herb. 8:38. 1903. TYPE: GUATE- MALA. Jalapa: Laguna de Ayarza(?), 1892, £.T. Heyde 454 (HOLO- TYPE: US; Photoholotype: TEX!). Cologania rufescens Rose, Contr. U.S. Natl. Herb. 8:38. 1903. TYPE: GUATEMALA: Quiche: in Chiul, Sep 1890, Heyde & Luz 4460 (HOLO- TYPE: US; Photoholotype: TEX!; Isotype: US; Photoisotype: TEX!). Cologania congesta Rose, Contr. U.S. Natl. Herb. 8:312. 1905. TYPE: MEX- ICO. México: Toluca, 4 Sep 1903, Rose & Painter 6768 (HOLOTYPE: US!). Cologania tenuis Rose, Contr. U.S. Natl. Herb. 10:100. 1906. TYPE: MEX- ICO. Morelos: near El Parque, 21 Sep 1903, J.N. Rose 7233 (HOLO- TYPE: US; Photoholotype: TEX!; Isotype: GH!). Cologania lozanit Rose, Contr. U.S. Natl. Herb. 10:100. 1906. TYPE: MEX- ICO. Nuevo Leon: near Monterrey, 7 Sep 1904, Pringle & Lozano 13425 (HOLOTYPE: US; Photoholotype: TEX!). This is a widespread variable species, especially in leaf shape. It ranges throughout most of the tropical and subtropical montane regions of western North America and South America (Fig. 2). Fearing (1959) recognized Cologa- nia ovalifolia (including C. australis and C. grandiflora) as distinct, positioning this next to C. broussonettii but noted in his discussion that the two species are taxonomically the most difficult portions of Cologania. Comparison of herbarium materials shows that they exhibit almost complete intergradation of morphological characters. In South America these taxa are more sharply separated than these are in the northern portions of their range. However, with reference to the Mexican collections, their morphological characters are known to intergrade to such an extent that one is tempted to treat these two 294 PHY. £.0 L.O:Gi4 volume 73(4):281-301 October 1992 taxa as members of a single variable species. The South American material, especially collections from Argentina, contains plants in which the morpholog- ical extremes are well marked. Because of the sharp distinction of these two taxa in the southern part of their range, they are treated as distinct, though it is apparent that their biological status can only be determined by detailed populational studies. I have gone over much of the material examined by Fearing and much additional material assembled since his study and must conclude that I can- not recognize but a single taxon from among this complex. The hypothetical taxon, Cologania ovalifolia, has an almost identical range as that of C. brous- sonettit and its variation is such that one must be exceedingly arbitrary in assigning specimens to this or that taxon on the characters proposed by Fear- ing in his key to species. McVaugh (1987) came to a similar conclusion for the area covered in his study noting, “In Nuevo Galicia I cannot distinguish more than one species [of this pair]. Flowers and fruit of the supposed species are for all practical purposes identical. The stated differences between the two involve leaflet-shape, width of stipules, and length of the leaf - radius, peduncles, and pedicels ...” I concur with McVaugh’s assessment regarding this matter and believe, further, that such observations hold throughout most of the range of the species concerned. COLOGANIA CAPITATA Rose. Distribution map, Figure 5. Cologania capitata Rose, Contr. U.S. Natl. Herb. 8:41. 1903. TYPE: MEX- ICO. Nayarit: near Santa Teresa, 13 Aug 1897, J.N. Rose 3459 (HOLO- TYPE: US; Photoholotype: TEX!; Isotype: GH). This taxon is a localized endemic of northern Nayarit. Except for its ex- ceptional capitate inflorescence it is similar to Cologania angustifolia. COLOGANIA CORDATA Fearing ez McVaugh. Distribution map, Figure 5. Cologania cordata Fearing er McVaugh, in Flora Novo-Galiciana 5:356. 1987. TYPE: MEXICO. Nayarit: near km 866, ca. 40 km SE of Tepic, 4 Sep 1957, R. McVaugh 18717 (HOLOTYPE: MICH). McVaugh, in his publication of this taxon, discussed its distinctiveness, and provided an excellent illustration. More detailed study might show this species to be a population form of Cologania procumbens; occasional nearly cordate leafed forms of C. procumbens occur elsewhere (e.g., Oaxaca: Baldwin 113987, GL). Turner: Taxonomic overview of Cologania 295 COLOGANIA HINTONIORUM B. Turner. Distribution map, Figure 3. Cologania hintoniorum B. Turner, sp. nov. Fig. 1. TYPE: MEXICO. Michoacan: Distr. Coalcoman, S. Torricillas, oak woods, 2400 m, 16 Dec 1938, George B. Hinton et al. 12767 (HOLOTYPE: LL!; Isotype: MICB!). Cologaniae hirtae (Mart. & Gal.) Rose similis sed foliolis ma- joribus tenuioribusque apicibus acutis (vs. obtusis vel rotundatis) differt. Slender perennial twining herbs, the stems up to 2 m long. Stems pilose with retrorse or spreading hairs. Leaves trifoliate, the leaflets broadly ovate, rounded or obtuse at the base, the apices acute. Stipules linear, attenuate, 5-9 mm long, 1.0-1.5 mm wide; stipels filiform 1-3 mm long. Inflorescences racemose, axillary, the flowers rather evenly disposed along the axis, the latter 5-16 cm long. Pedicels of flowers mostly 5-10 mm long, the basal bracts per- sistent, lanceolate to narrowly ovate, 5-12 mm long, (1-)2-4 mm wide. Calyx thinly pilose, 18-22 mm long; bracteoles large, broadly ovate, mostly 8-10 mm long, 4-5 mm wide. Corollas red; standards 3-4 cm long, the banner 11-14 mm wide, retuse, hardly recurved at anthesis; wings and keel petals ca. as long or somewhat shorter than the standard. Fruits (chasmogamous) glabrous or nearly so, up to 7 cm long, 7 mm wide; mature seeds not examined. ADDITIONAL SPECIMENS EXAMINED: MEXICO. Guerrero: Distr. Mina, Aguazarca-Filo, 8 Nov 1937, Hinton et al. 11262 (GH,LL,MICH,US); Distr. Montes de Oca, “San Antonio Buenos Airs,” 21 Dec 1937, Hinton et al. 11694 (LL,MICH). Fearing (1959) cites an additional collection of this taxon from Guerrero (Distr. Mina, 4 Dec 1939, Hinton 14947, GH,US) which I have not examined. MEXICO. Michoacan: steep mountainsides NW of Aguililla, ca. 7 km S of Aserradero Dos Aguas, 2000 m, 3 Mar 1965, Mc Vaugh 22725 (MICH). McVaugh (1987), in the description of Cologania biloba for his Flora Novo- Galiciana, essentially described C. hintoniorum, following which he noted: Our plant evidently differs in some respects from typical Colo- gania hirta of central Oaxaca. The herbage is much less conspic- uously hirsutulous, the leaflets are more strongly acuminate, the bracteoles are broadly ovate (linear and 1.5 mm wide in Oaxaca specimens seen), the blade of the standard is relatively narrower (up to 18 mm in typical hirta, according to Fearing), and the ovary and fruit are glabrous (not densely strigose). With its bright red flowers in axillary racemes, this is not only one of the most distinc- tive of our species of Cologania, but also one of the showiest. 296 PHYTOL OGIA volume 73(4):281-301 October 1992 Cologania hintoniorum, with its very large red corollas and narrowed stan- dards, is markedly different from the smaller flowered C. hirta; in addition the leaves are quite different from the latter, having larger, thinner, more acute leaflets. The distributional relationships of this species pair is shown in Fig. 3, along with C. biloba and C. racemosa, all having racemose inflorescences, but, each markedly distinct among themselves. COLOGANIA HIRTA (Mart. & Gal.) Rose. Distribution map, figure 3. Cologania hirta (Mart. & Gal.) Rose, Contr. U.S. Natl. Herb. 3:315. 1895. BASIONYM: Galactia hirta Mart. & Gal., Bull. Acad. Roy. Sci. Brux- elles 10:190. 1843. TYPE: MEXICO. Oaxaca: “dan les forets de chenes des regiones alpines de la cordillere orientale d’ oaxaca, a 7,500 pieds [Cerro de San Felipe],” Sep-Apr 1840, H. Galeott: 3204 (HOLOTYPE: BR; Photoholotype: TEX!). McVaugh (1987), while accepting Cologania hirta into his Flora Novo- Galiciana, nevertheless pointed out the distinction between his material and that from Oaxaca. I have provided the name C. hintoniorum for the plants of Novo Galicia, restricting C. hirta to those from the state of Oaxaca. COLOGANIA OBOVATA Schlecht. Distribution map, figure 5. Cologania obovata Schlecht., Linnaea 12:287. 1838. TYPE: MEXICO. Hi- dalgo: near “Mineral del Monte [Real del Monte],” Aug 1835, C. Ehren- berg 575 (HOLOTYPE: HAL; Photoholotype: TEX!). Cologania humifusa Hemsl., Diag. Pl. Nov. 3:47. 1880. TYPE: MEX- ICO. San Luis Potosi: near San Luis Potosi, 1879, Parry & Palmer 194 (LECTOTYPE [selected here]: K!; Isolectotype: GH; Photoisolectotype: TEX!). As noted by Rose (1903) the protologue cites several collections; Fearing designated the lectotype, selected here, as an holotype (at least by inference). Cologania lemmonii A. Gray, Proc. Amer. Acad. Arts 19:74. 1883. TYPE: U.S.A. Arizona: Cochise Co., Chiricahua Mts., 1882, Lemmon 2681 (HOLOTYPE: GH!; Photoholotype: TEX!; Isotypes: F,US). Cologania pringlei S. Wats., Proc. Amer. Acad. Arts 23:271. 1888. TYPE: MEXICO. Chihuahua: base of Sierra Madre, pine woodlands, 9 Oct 1887, C.G. Pringle 1499 (HOLOTYPE: GH!). Taxonomic overview of Cologania 297 Turner: Figure 5. Distribution of Cologania capitata (open triangles), C. cordata (closed triangles), and C. obovata (closed circles). 298 PHY TOLOGIA volume 73(4):281-301 October 1992 Cologania deamiu Fernald, Proc. Amer. Acad. Arts 26:492. 1901. TYPE: MEXICO. Morelos: near Cuernavaca, 7 Jul 1900, C. Deam 40 (HOLO- TYPE: GH!; Photoholotype: TEX!; Isotype: MICH; Photoisotype: TEX!). Cologania houghtt Rose, Contr. U.S. Natl. Herb. 8:39. 1903. TYPE: MEX- ICO. Puebla: along railroad between Tepeaca and Santa Rosa, S of Puebla city, 27 Jun 1899, J. N. Rose 4737 (HOLOTYPE: US; Photo- holotype: TEX!; Isotype: GH!). Cologania humilis Rose, Contr. U.S. Natl. Herb. 8:40. 1903. TYPE: MEX- ICO. Nayarit: between Dolores and Santa Gertrudis, 7 Aug 1897, J.N. Rose 2042 (HOLOTYPE: US; Photoholotype: TEX!). COLOGANIA PALLIDA Rose. Distribution map, figure 4. Cologania pallida Rose, Contr. U.S. Natl. Herb. 8:38. 1903. TYPE: U.S.A. Texas: Jeff Davis Co., “Smiths’ run to Providence Creek,” 15 Jun 1851, C. Wright 957(HOLOTYPE: US; Isotypes: GH,MO,UC; Photoisotypes: TEX!). This is a weakly differentiated species belonging to the Cologania brous- sonettit complex. It appears to intergrade southeastwards with elements of the latter and more intensive field studies may well suggest varietal status for the taxon. Additionally, specimens of C. broussonettii from northwesternmost México (Sonora and Chihuahua) appear to have relatively short peduncled, axillary racemes and smaller leaves; these might ultimately prove varietally distinct. COLOGANIA PROCUMBENS Kunth. Distribution map, figure 6. Cologania procumbens Kunth, Mimoses 205. pl. 57. Jun 1874; H.B.K. Nov. Gen. & Sp. 6 [folio]:323. 12 Jul 1824; 6 [quarto]:412. Sep 1824. TYPE: COLOMBIA. “near Popayan, 912 hex,” Oct-Nov 1801, Humboldt & Bonpland s.n. (HOLOTYPE: P; Photoholotype: TEX!). Cologania erecta Rose, Contr. U.S. Natl. Herb. 5:136. 1897. TYPE: MEX- ICO. Jalisco: “rocky hills near Guadalajara, 21 Jun 1893, C.G. Pringle 4401(HOLOTYPE: US; Photoholotype: TEX!; Isotypes: F,MICH,MO, US). 299 Taxonomic overview of Cologanta Turner: Figure 6. Distribution of Cologania procumbens in Mexico. 300 PHY TOL OGIA volume 73(4):281-301 October 1992 McVaugh correctly noted, in my opinion, that this unifoliate, usually non- twining, herb may occasionally hybridize with yet other species, calling to the fore the possibility of such hybrids between it and Cologania cordata. Ac- tually, the latter taxon itself may represent a rather stabilized, perhaps old, hybrid or hybrid derivative between C. procumbens and C. broussonettit, or yet some other taxon, such as C. racemosa, to judge from its variable populational structure. COLOGANIA RACEMOSA (B.L. Rob.) Rose. Distribution map, figure 3. Cologania racemosa (B.L. Rob.) Rose, Contr. U.S. Natl. Herb. 8:40. 1903. BASIONYM: Cologania pulchella H.B.K. var. racemosa B.L. Rob., Proc. Amer. Acad. Arts 29:315. 1894. TYPE: MEXICO. Jalisco: Tequila, Aug-Sep 1886, E. Palmer 379 (LECTOTYPE [selected here]: GH!; Pho- tolectotype: TEX!; Isolectotypes: DS,US). Fearing incorrectly noted the “holotype” of this taxon to be at US. McVaugh (1987) and Rose (1903) both noted that two collections were cited in the protologue; I have selected the Palmer collection as lectotype). Fearing (1959) and McVaugh (1987) treated this taxon as synonymous with Cologania biloba. The latter is readily distinguished by its mostly shortened racemes in which (or along which) the flowers tend to cluster; in addition the corollas are mostly longer (28-30 mm from base of calyx to banner tip vs. mostly 15-25 mm), and the leaves are mostly 2-3 times as long as wide (vs. 1.5-2.0 times as long as wide). Cologania biloba occurs in the state of México and along the highlands of eastern México, whereas C. racemosa is confined to the Sierra Madre Occidental from Durango southwards to western Michoacan. The following specimens have been examined: MEXICO. Durango: 28 road km S of Cd. Durango (ca. 23° 52’ N, 104°46’ W), 1800-2000 m, 18 Aug 1982, Worthington 8980 (TEX). Jalisco: 12 mi S of Autlan, 1150 m, 26 Sep 1966, Anderson & Laskowski 3756 (MICH); ca. 15 km E of Pihuamo, 1200- 1300 m, 23 Oct 1963, Dieterle 3013 (MICH); ca. 20 mi N of Tepatitlan, ca. 1450 m, 27-28 Aug 1958, McVaugh 17418 (MICH); 10-12 mi SSE of Autlan, 1500-1800 m, 29 Sep 1960, McVaugh 19587 (MICH). Nayarit: 22.7 km NW of Jesus Maria, ca. 1380 m, 23 Sep 1989, Flores F. 1840 (MICH); 10 mi SE of Ahuacatlan, 1100-1300 m, 17-18 Nov 1959, McVaugh & Koelz 773 (MICH). Michoacan: Coalcoman, 1000 m, 18 Sep 1938, Hinton et al. 12204 (MICH). Other than the type, Fearing examined only one of the above cited sheets (Hinton et al. 12204), the latter rather atypical. I believe had he access to the rather uniform suite of collections available today, he would have recognized the present taxon as distinct. Turner: Taxonomic overview of Cologania 301 ACKNOWLEDGMENTS I am grateful to Guy Nesom for the Latin diagnosis and to him and T.P. Ramamoorthy for reviewing the paper. LITERATURE CITED Fearing, O.S. 1959. A cytotaxonomic study of the genus Cologania and its relationship to Amphicarpaea (Leguminosae-Papilionateae). Doctoral Dissertation, University of Texas, Austin. McVaugh, R. 1987. Cologania, in Fl. Novo-Galiciana 5:350-362. University of Michigan Press, Ann Arbor, Michigan. Rose, J.N. 1903. Synopsis of the species of Cologania. Contr. U.S. Natl. Herb. 8:34-42. Phytologia (October 1992) 73(4):302-303. VERBESINA ZARAGOSANA (ASTERACEAE, HELIANTHEAE), A NEW SPECIES FROM NUEVO LEON, MEXICO Billie L. Turner Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT A new species, Verbesina zaragosana B. Turner, is described from southern Nuevo Leon where it occurs on gypsum substrates. It is closely related to the gypsophilic endemic V. hintontorum B. Turner, but is readily distinguished by having larger leaves with an ashy white, densely tomentose vestiture on both surfaces (vs. sparsely to moderately pubescent with stout terete hairs, each hair arising from an enlarged basal complex of cells). KEY WORDS: Asteraceae, Heliantheae, Verbesina, México, gyp- sophile Preparation of a systematic treatment of Verbesina for México has occa- sioned the present paper. Verbesina zaragosana B. Turner, sp. nov. TYPE: MEXICO. Nuevo Leon: 3.7 mi N of Zaragosa on road to Aramberri, gypsum outcrops W of road, 10 Oct 1984, Tina J. Ayers & R. Scott 509 (HOLOTYPE: TEX!; Isotype: MEXU). Verbesinae hintoniorum B. Turner similis sed foliis midcaulinis latioribus (plerumque 6-14 mm latis vs. 3-6 mm) dense cineracei- tomentosisque in superficiebus ambabus (vs. sparsim hispidis vel moderate strigosis trichomatibus crassis ascendentibusque, haud tomentosis) differt. Stiffy erect perennial herbs 50-70 cm high. Leaves alternate throughout, or nearly so, gradually reduced upwards, those at midstem mostly 4-12 cm long, 0.6-1.4 cm wide, scarcely petiolate, densely matted tomentose on both 302 Turner: New Verbesina from Nuevo Leon 303 surfaces, the hairs ashy white, flattened, crinkly, not arising from a pronounced group of basal cells, the margins entire or nearly so. Heads numerous, arranged in foreshortened stiffly branched nearly flat topped cymes, the ultimate pedun- cles mostly 2-6 cm long. Involucres broadly campanulate to hemispheric, 5-7 mm high, 10-15 mm wide, the bracts 3-4 seriate, moderately graduate, elliptic lanceolate to oblanceolate, tomentulose, apically acute to acuminate. Recep- tacle broadly conical, the pales 5-7 mm long, glabrous, acuminate. Ray florets 5-8, pistillate, fertile, the ligules yellow, 3-6 mm long, 2-4 mm wide. Disk flo- rets numerous, the corollas yellow, ca. 5 mm long, the tube 0.5-0.8 mm long. Achenes ca. 4 mm long, very broadly winged, the upper part of the wings extending well above the body of the achene and as wide or wider than the body, the inner achenes mostly glabrous, those along the periphery usually sparsely pubescent, somewhat warty with age. ADDITIONAL SPECIMENS EXAMINED: MEXICO. Nuevo Leon: Mpio. Galeana, above El Nogal in stunted pine forest, 2250 m, 5 Nov 1983, Hinton et al. 18093 (TEX); between Galeana and Rayones, 1270 m, 17 Oct 1990, Hinton et al. 20825 (TEX); Mpio. Aramberri, above Puerto Los Borregos, gypsum hillside, 6 Nov 1991, Hinton et al. 21762 (TEX). This taxon is clearly closely related to Verbesina hintontorum B. Turner, having the habit and most of the capitular features of that species. It differs markedly from V. hintontorum in having a densely tomentose, ashy white vestiture on both surfaces of the leaves, the hairs thin and markedly flattened, each hair arising from a relatively thin basal cell (vs. coarsely pubescent, the hairs terete and arising from a group of broad basal cells, not at all ashy white tomentose). When I first examined collections of this taxon I misidentified these as V. potosina B. Robinson, the latter possessing foliage superficially similar to V. zaragosana. Subsequent collections, mostly by the Hinton family, have shown the latter species to be relatively widespread on gypsum outcrops, as is V. hintoniorum, but the two taxa have not been found growing together, nor have intermediates been detected. In short, V. zaragosana appears to be a good species, partially sympatric with V. hintoniorum, but not intergrading with it. ACKNOWLEDGMENTS I am grateful to Guy Nesom for the Latin diagnosis and to him and T.P. Ramamoorthy for reviewing the manuscript. Phytologia (October 1992) 73(4):304-306. TWO NEW SPECIES OF AGERATINA (ASTERACEAE, EUPATORIEAE) FROM OAXACA, MEXICO Billie L. Turner Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT Two new species of Ageratina, A. cruzii B. Turner and A. kochi- ana B. Turner, are described from Oaxaca, México. Both belong to the subgenus Neogreenella, the former most closely related to A. etlensts, the latter to A. chimalapana. KEY WORDS: Asteraceae, Eupatorieae, Ageratina, México Routine identification of Mexican Asteraceae has revealed the following novelties. Ageratina cruzii B. Turner, sp. nov. TYPE: MEXICO. Oaxaca: Distr. Teposcolula, Mpio. San Pedro Topiltepec, Santa Maria Tiltepec, bosque de encino, 2350 m, 5 Nov 1990, E. Cruz C. 321 (HOLOTYPE: TEX!; Isotype: CHAPA). Ageratinae etlenst (B.L. Rob.) King & H. Rob. similis sed ca- pitulescentia laxis valde terminalibus (vs. capitulis plerumque axil- laribus congestisque), paginis inferis foliorum puberulis (vs. glabris), et capitulis ca. 10 flosculos efferentibus (vs. 20-25) differt. Suffruticose perennial glabrous herbs or shrublets to 1.5 m high. Stems reddish, glabrous, the internodes longer than the leaves. Leaves opposite throughout, gradually reduced upwards, mostly 5-7 cm long, 2.5-3.5 cm wide; petioles 1.0-1.5 cm long; blades broadly ovate to subdeltoid, abruptly taper- ing upon the petioles, reticulate nervate, with 3 major nerves arising from above the base, the margins rather evenly crenuloserrulate. Heads numerous, arranged in terminal, relative lax cymes, the ultimate peduncles mostly 10-20 304 Turner: Two new Ageratina from Oaxaca 305 mm long, appressed-puberulent with uniseriate, purple jointed, hairs. Involu- cres 3.5-4.0 mm high, narrowly campanulate, the bracts biseriate, subequal, linear-lanceolate, glabrous or nearly so. Receptacle plane, glabrous, epaleate, ca. 1 mm across. Florets 10 per head (1 count), the corollas white, ca. 5 mm long, glabrous, the tubes ca. 1.5 mm long, the lobes glabrous, ca. 0.5 mm long. Achenes ca. 2.5 mm long, sparsely hispidulous, the pappus of 25-30 barbellate bristles 3-4 mm long, not enlarged apically. According to label data, the plant is a herb 1.5 m high and is reportedly frequent at the site indicated. Ageratina cruzttis superficially similar to the widespread highly variable A. ligustrina DC. It is readily distinguished from the latter in having leaves with 3 principal basal nerves (vs. pinnately nervate), nonpunctate, minutely reticulate surfaces (vs. rather smooth and punctate), and relatively minute involucres 3.5-4.0 mm high (vs. 5.0-6.0 mm ). Its actual relationship appears to be with the poorly known A. etlensis (B.L. Rob.) King & H. Rob., also a species of the mountain ranges north of Cd. Oaxaca. Ageratina cruz differs from the latter in having a pronounced naked lax capitulescence of more numerous smaller heads with fewer florets (ca. 10 vs. 20-25), as noted in the Latin diagnosis. Ageratina kochiana B. Turner, sp. nov. TYPE: MEXICO. Oaxaca: Distr. Teposcolula, Mpio. San Pedro Topiltepec, Santa Maria Tiltepec, bosque de encino, 2350 m, 5 Nov 1990, E. Cruz C. 280 (HOLOTYPE: TEX!; Isotype: CHAPA). Ageratinae chimalapanae B. Turner similis in characteribus in- volucri ac achaeniorum sed valde differt foliis majoribus laminis ovatis triplinervibus (vs. lanceolati-ellipticis pinnatinervibus), et petiolis 10-20 mm longis (vs. 1-2 mm). Suffruticose perennial herbs or shrublets 1.0-1.2 m high. Stems sparsely puberulent to glabrate. Leaves opposite throughout, mostly 2-4 cm long, 1.0- 1.5 cm wide; petioles sparsely puberulent beneath, especially along the veins, the surfaces reticulate venose, moderately atomiferous glandular, the mar- gins hispidulous, crenulate to nearly entire. Capitulescence of 10-15 heads arranged in terminal congested cymes, the ultimate peduncles 1-7 mm long, puberulent. Involucres campanulate, 4-5 mm high the bracts subgraduate, triseriate, the middle series strongly 2 nerved with raised ribs, ovate-elliptic, ciliolate marginally with soft tawny hairs. Receptacle plane, glabrous, ca. 1.5 mm across, epaleate. Florets 15-20 per head, the corollas white or pinkish, ca. 5 mm long, glabrous, the tube ca. 1.5 mm long, the lobes ca. 0.8 mm long, glabrous. Achenes (immature) ca. 2.5 mm long, hispidulous; pappus double, an outer row of 15-20 short, narrow bristles mostly 0.5-2.5 mm long, the inner 306 PHY T.0.5,0 GEA volume 73(4):304-306 October 1992 row of ca. 20 white to reddish barbellate bristles 5-6 mm long, their apices somewhat expanded. ADDITIONAL SPECIMEN EXAMINED: MEXICO. Oaxaca: Distr. Te- poscolula, Mpio. San Pedro Topiltepec, Santa Maria Tiltepec, bosque de en- cino, 2455 m, 22 Nov 1990, E. Cruz C. 299 (CHAPA,TEX). According to label data the plant is a shrublet 1.0-1.2 m high and reportedly frequent at the sites indicated. The type has relatively more linear-lanceolate leaves than the second cited collection, the former being 3.0-3.5 cm long, the latter 2.0-2.5 cm long (3-4 times as long as wide, vs. 2-3 times as long as wide, respectively), otherwise they are essentially identical. The leaves of this species resemble Ageratina seleri B. Turner in size and shape, but those of the latter are velutinous beneath. Features of the involucre, corolla and especially pappus, however, appear to relate Ageratina kochit to A. chimalapana B. Turner of easternmost Oaxaca, both having a double pappus with the outer series much shorter, as in the A. mairetiana (DC.) King & H. Rob. complex (cf. Turner 1987, 1989) Ageratina chimalapana is readily distinguished from A. kochit by its leathery trinervate, broadly ovate leaves, the petioles 10-20 mm long. It is a pleasure to name this very distinct species in honor of Dr. Stephen D. Koch, Director of the Herbarium at Chapingo, México (CHAPA) who has as- sembled a remarkable and varied collection of plants from throughout México. ACKNOWLEDGMENTS I am grateful to Dr. Guy Nesom for the Latin diagnoses and to him and Dr. T.P. Ramamoorthy for reviewing the manuscript. LITERATURE CITED Turner, B.L. 1987. Study of the Ageratina mairetiana complex. Phytologia 63:417-427. 1989. A new species of Ageratina (Asteraceae, Eupatorieae) from Chimalapa, Oaxaca, México. Phytologia 67:400-402. Phytologia (October 1992) 73(4):307-311. NEW TAXA AND COMBINATIONS IN WESTERN NORTH AMERICAN LILIACEAE Dale W. McNeal Department of Biological Sciences, University of the Pacific, Stockton, California 95211 U.S.A. ABSTRACT New combinations are validated for two taxa of Liliaceae in Califor- nia and Oregon so that the names may be used in forthcoming publi- cations. These include: Allium bolanderi S. Watson var. mirabile (L. Henderson) McNeal and Zigadenus micranthus Eastwood var. fontanus 0. Welsh ez McNeal. In addition, Allium peninsulare Lemmon ez Greene var. franciscanum McNeal & Ownbey is described as new. KEY WORDS: Taxonomy, Liliaceae, Allium, Zigadenus, Califor- nia, Oregon In the process of completing treatments of Allium and Zigadenus for the Jepson Manual: Higher Plants of California, it is necessary to make two new nomenclatural combinations. Each of the new combinations is formally made below with a discussion of the reasons for making them. In addition, A. peninsulare var. franciscanum, a distinct variety discovered several years ago by myself and Dr. Marion Ownbey but never validly published, is described here. NEW COMBINATIONS Allium bolanderi S. Watson var. mirabile (L. Henderson) McNeal, stat. et comb. nov. BASIONYM: Allium mirabile L. Henderson, Rhodora 32:22. 1930. TYPE: UNITED STATES. Oregon: Josephine Co.: Eight Dollar Mt., near Selma, 17 June 1926, L. Henderson 6098 (HOLOTYPE: ORE!; Isotypes: GH!,OSC!). 307 308 PHY TO L-O'GiA volume 73(4):307-311 October 1992 Allium bolanderi var. mirabile differs from the typical variety in its unique elongate, irregularly shaped bulbs which suggest small tubers; the typical vari- ety has ovoid to subglobular bulbs. Variety mtrabile also differs in its narrower perianth segments. Both varieties have a delicate, highly contorted bulb coat reticulation that is unique in the genus (Fig. 1). This reticulation pattern supports the conclusion of a close relationship between the two taxa. Because, presumably, the bulb shapes differ, the broken edge of the bulb coat in var. bolanderi tends to be sharply serrate and regular while that of var. mirabile is wavy and quite irregular. Allium bolanderi var. bolanderi occurs on heavy clays, usually of serpentine origin, from Douglas and Josephine counties in southwest Oregon south in the coast ranges to Lake Co., California, with a disjunction on Mt. Hamilton in Santa Clara Co. Variety mirabile has been collected on similar habitats in Curry, Jackson, and Josephine counties in Oregon and south into Humboldt Co., California. Rantasentative Specimens: UNITED STATES. California: Humboldt Co.: Van Duzen River Valley, opposite Buck Mtn., June 27-July 30, Tracy 2771 (UC). Siskiyou Co.: 2.5 mi. W. of Hilt, 16 May 1992, McNeal 3910 (CPH). Trinity Co.: Mad River, 11 mi. SE. of Ruth. Oregon: Curry Co.: Rogue River Trail, 5 mi. E. of Illahe, 31 May 1947, Baker 4400 (OSC). Douglas Co.: Glendale, 19 June 1902, Jones s.n. (DS). Jackson Co.: Eight Dollar Mtn., 18 June 1932, Applegate 7308 (DS,GH,UC); Grants Pass, 17 May 1889, Howell 1394 (ND). Zigadenus micranthus var. fontanus (Eastwood) O.S. Walsh ez McNeal, stat. et comb. nov. BASIONYM: Zigadenus fontanus Eastw., Leafl. West. Bot. 2:41. 1937. TYPE: UNITED STATES. California, Marin Co.: Bootjack, Mt. Tamalpais, 7 June 1936, J.T. Howell 12656 (HOLO- TYPE: CAS!): This combination was first proposed by O.S. Walsh in a Ph.D. thesis at the University of California, Berkeley (1940), but has never been validly published. Walsh demonstrated that varieties micranthus and fontanus were interfertile in reciprocal crosses. Seeds yielded a wide array of intermediate phenotypes. Variety fontanus is apparently a physiological variant adapted to vernally moist or saturated serpentine soils where the typical variety does not occur. It differs from var. micranthus in its larger size (stem 60-80 cm in variety fontanus vs. 15- 50 for var. mzcranthus) and larger flowers and fruits. Further, variety fontanus has a paniculate inflorescence with the lowermost flowers of the lateral branches staminate while the typical variety is racemose or only rarely paniculate and then all flowers are perfect. In var. fontanus the stamens are subequal. Generally, Zigadenus micranthus var. fontanus is confined to vernally wet areas and marshes from Mendocino Co., California south to Santa Cruz Co. A McNeal: New taxa and combinations in Liliaceae 309 + oe Ae Bes