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FIELDIANA

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Botany

Published by Field Museum of Natural Hi

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Volume 36, No. 6 October 10, 1973

Hoffmannias from Mexico and Central America

Louis 0. WILLIAMS

CHAIRMAN, DEPARTMENT OF BOTANY
FIELD MUSEUM OF NATURAL HISTORY

Standley, in preparing an account of Hoffmannia for the "North
American Flora," described nine new species of the genus (Contr. U.
S. Nat. Herb. 20: 203-207. 1919) for North America and commented
"They must be of very local distribution, for it is unusual to find in
herbaria more than two or three specimens of any species."

Dr. John D. Dwyer who prepared an account of "The genus Hoff-
mannia in Panama," (Ann. Mo. Bot. Gard. 56: 269-286. 1969) added
considerably to our knowledge of the genus. He commented that
"The fact that eleven new species are described in this paper suggests
the need for an intensification in the collecting of the genus, at least
in Central America."

We have now more material of Hoffmannia from southern Mexico
and Central America than has been avialable to anyone previously.
A revision of this material merely to prepare a new account for the
"Flora of Guatemala" confirms the statements of Drs. Standley and
Dwyer. There are certainly more species of Hoffmannia in our col-
lection than have been recognized. Many of these seem to be rea-
sonably local in distribution. There are species in Guatemala that
most probably are different than those that will appear in the "Flora"
—usually the material is inadequate, very often lacking flowers.

How many other species of Hoffmannia exist in the isolated but
unvisited cloud forests of Central America we do not know. Species
of Hoffmannia seem to be rather restricted in range and many species
are of the high, wet forests, so it is quite likely that there are still
many species to be discovered.

Much of the herbarium and field work upon which this paper is
based was supported by the National Science Foundation.

IS USSN 0015-0746

Library of Congress Catalog Card Number: 73-88653

o/
Publication 1170 51

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52 FIELDIANA: BOTANY, VOLUME 36

Hoffmannia bullata L. Wms. sp. nov.

Plantae herbaceae aut leviter suffruticosae, usque ad 60 cm. altae. Folia
obovata oblonga vel oblanceolata acuta vel obtusa petiolata bullata; inflores-
centiae axillares subumbellatae vel subraceomosae, pedunculus gracilis glaber vel
sparse pilosus, pedicelli graciles; calyx glaber, lobi triangulares vel lanceolato-
triangulares, acuti; corolla ca. 1 cm. longa, lobi oblongi obtusi vel acuti; baccae
rubrae.

Herbaceous or somewhat woody plants 10-60 cm. tall, erect or repent. Stems
simple, subterete or terete, densely ferrugineous-villous or glabrate, leafy above;
leaves obovate to oblong or oblanceolate, acute or obtuse, long-attenuate to the
base, short petiolate, bullate, pubescent or puberulent with segmented hairs along
the nerves below, glabrous or glabrescent above, the blade 9-20 cm. long and 3-7
cm. broad, the lateral nerves 8-15 pairs, the petioles mostly 1-3 cm. long, stout.,
pubescent or glabrescent; inflorescences axillary, subumbellate or subracemose,
the peduncles slender, 3-7 cm. long, glabrous or sparsely pilose pubescent, pedicels
slender, 2-5 mm. long; flowers 3-10, dull brick red; calyx and hypanthium 3-4
mm. long, the hypanthium turbinate, glabrous, the calyx lobes triangular or lance
triangular, acute, sparsely villosulose; corolla about 1 cm. long, glabrous, the
lobes oblong, obtuse or acute, 2-3-times as long as the tube; stamens with short
filaments, the anthers exserted; berry bright red.

Mexico: Finca Irlandia, Chiapas, June 1914, Purpus 711 4.

Guatemala: damp dense forest, erect, simple succulent herb,
fruits red, Finca Pirineos below Santa Maria de Jesus, Dept. Que-
zaltenango, alt. 1,350-1,380 m., March 11, 1939, Standley 68234,
68239; wet wooded quebrada, herb 30-60 cm. tall, common, fruit
red, along old road between Finca Pirineos and Patzulin, Dept. Que-
zaltenango, alt. 1,200-1,400 m., Feb. 9, 1941, Standley 86752; herb,
leaves deeply and strikingly rugose on both sides, forest along que-
brada San Geronimo, Finca Pirineos, lower south facing slope of Vol-
can Santa Maria, between Santa Maria de Jesus and Calauache",
Quezaltenango, alt. 1,300-2,000 m., Jan. 1-2, 1940, Steyermark
33384; wooded slopes, Volcan Zunil, vicinity of Finca Los Nubes east
of Pueblo Nuevo, Dept. Suchitepe"quez, alt. 500-800 m., Feb. 2, 1940,
Steyermark 35425; above Finca El Porvenir, slopes of Volcan Taj-
umulco, alt. 1300-1500 m., March 7, 1940, Steyermark 37241; ter-
restrial herb along creek in jungle, leaves very rugose on both sides,
rich green above with gray-green mid-rib, silvery or pale green be-
neath, peduncle reddish, pale green at top, calyx pale green, corolla
lobes spreading, salmon-brick color, anthers pale yellowish-white, as
is stigma; between Virginia and Lago Izabal, Montana del Mico,
Dept. Izabal, alt. 50-100 m., April 4, 1940, Steyermark 38719 (type,
F); slopes of Volcan Santa Clara, \] ->-2 miles west of Finca El Na-
ranjo, alt. 1,250 m., June 1, 1942, Steyermark 46816; leaves deeply

WILLIAMS: HOFFMAN I A 53

rugose on both sides, dense rich forest between Ixcan and Rio Ixcan,
Dept. Huehuetenango, alt. 150-200 m., July 23, 1942, Steyermark
49360; cultivated specimen from wet wooded slopes near Villa Jesus
on road from Puerto Barrios to Guatemala, alt. 100 m., Nov. 8, 1959,
Moore 8263.

Guatemala: The following sterile or essentially sterile collection
doubtless belong to this species — Standley 66907, 86663; Steyermark
38901, 41710, 44988, 45044, 46816.

British Honduras: prostrate herb, 2 ft. long, in forest, Rio Viejo,
alt. 1,300 ft., Nov. 20, 1933, Schipp S-623.

Honduras: wet mountain forest, Lancetilla Valley near Tela,
Dept. Atlantida, alt. 20-600 m., Dec. 6, 1927— March 20, 1928,
Standley 52642, 53491 ; moist floor of dense forest near Lancetilla, alt.
150 ft., Aug. 18, 1934, Yuncker 5038.

Costa Rica: Brenes 5626, 13672; Burger et al. 4395, 6981; Jimenez
1372, 2467; Ledn 171; Molina et al. 17548; Raven 20923; Schnell 806;
Smith A 733; Weston 5067.

This is a mass of material all except one specimen having been
collected since Standley prepared an account of the genus for the
"North American Flora." The material from Costa Rica, cited here
by collector and number only, may be distinct from that of northern
Central America and Mexico but of that available not a single col-
lection has adequate flowers for study.

Most of these specimens will be found in herbaria under the name
of Hoffmannia refulgens (Hook.) Hemsl. — certainly a related species
for which the type (see Hooker, Bot. Mag. 88: t. 5346. 1862) was hor-
ticultural material presumed to be from South America. Our species
differs in having much smaller flowers and in other details.

Hoffmannia culminicola Standl. & L. Wms. Ceiba 1 : 166. 1950.

A species allied to H. angustifolia Standl. to which it has been
referred. The fewer lateral nerves (5-8 pairs) will distinguish it from
H. angustifolia (11-15 pairs) when in flower or fruit; the smaller
triangular and acute calyx lobes, not lance-oblong and obtuse, and
smaller corollas will distinguish it. The species occurs in the cloud
forests of western Guatemala, El Salvador and to central Honduras.
It is now undoubtedly exterminated in El Salvador as the last of
the cloud forest has been cut down.

The following specimens, mostly distributed as H. angustijolia
should bear this name:

54 FIELDIANA: BOTANY, VOLUME 36

Guatemala: Steyermark 31050, 32320.

El Salvador: Carlson 895, 903.

Honduras: Carlson 2452; Classman 2034; Molina 5061, 10235,
10836; Molina & Molina 25578; Standley 4797 (type), 15645; Wil-
liams & Molina 10019, 10395, 11141, 11236, 12080, 12503, 14819,
14934; Williams, Molina & Merrill 15623; Valerio 757, 1752, 1790,
1793.

Hoffmannia excelsa (HBK.) Schum. in Martius, Fl. Bras. 6,
pt. 6: 327. 1889; Standl. No. Am. Fl. 32: 197. 1934. Psychotria
excelsa HBK. Nov. Gen. & Sp. PL 3: 355, t. 282. 1819.

This Mexican plant, beautifully illustrated as Psychotria excelsa,
has been credited to Guatemala in recent years by Dr. Standley and
some 20 collections referred here. The Guatemalan plants, so far
as the material is determinable, is a species with clavate, not bifid,
styles and with other characters to separate it from H. excelsa. There
may be more than one species in the material from Guatemala but
that with good flowers is described below as H. montana.

Hoffmannia gesnerioides (Oerst.) Kuntze, Rev. Gen. PI. 285.
1891. Ophryococcus gesnerioides Oerst. Vid. Medd. Kjoebenh. 1852:
53. 1852.

Originally described from Nicaragua and we have recollected it in
the montane forest there a dozen times in recent years (Molina 20371,
20450; Williams et al. 23523, 23950, 24708, 24727, 24805, 24909,
27615, 27728, 29177, 29235). This species is also known from Hon-
duras. A fruiting collection, Steyermark 31611, from Guatemala, has
been referred here but it seems likely that it is not H. gesnerioides.

Hoffmannia liesneriana L. Wms. sp. nov.

Plantae herbaceae vel suffruticosae 1.5 m. altae vel ultra, caules quadrangu-
lares vel teretes glabrescentes. Folia ovata vel oblongo-ovata acuta longe peti-
olata; inflorescentiae cymosae breviter pedunculatae axillares multiflorae compac-
tae; pedunculi graciles; pedicelli perbreves; ovaria quandrangularia; calyx usque
ad basem lobatus, lobi carnosi lineares acuti cucullati; corolla parva extus puberula,
tubus brevis, lobi oblongo-lanceolati acuti; stamina exserta; stylus lanceiformis.

Forest herbs or suffruticose herbs 1.5 m. tall or perhaps taller, the stems
leafy above often leafless below, quadrate and becoming terete with age, glabrous
or nearly so, up to 1 cm. in diameter. Leaves ovate to oblong-ovate, acute,
abruptly attenuate into a long slender petiole, glabrous, or puberulent on nerves
and petiole, with 15-18 pairs of principal lateral nerves, these anastomosing near
the margin, the blade 14-22 cm. long and 5-12 cm. broad, the petiole to 7 cm. long;

WILLIAMS: HOFFMAN I A 55

inflorescences axillary, commonly on leafless lower part of the stem, sometimes at
ground level, many-flowered, compact, short-pedunculate cymes, puberulent;
peduncles slender, up to 3 cm. long; pedicels very short or almost none; young
ovaries 4- (5-) angled, obscurely rufous puberulent or glabrescent, about 2.5 mm.
long at anthesis; calyx lobate to the base, the lobes linear, acute, cucullate, fleshy,
triquetrous in cross-section, rufous puberulent, about 3-3.5 mm. long and 0.7-1
mm. broad at the base; corolla small, 6-8 mm. long at anthesis, puberulent out-
side, the tube 3.5-4 mm. long slightly exceeded by the calyx lobes, the lobes ob-
long-lanceolate, acute, 4-4.5 mm. long and 1.5-2 mm. broad; stamens attached
near middle of tube, the filaments very short, the anthers about 4 mm. long, ex-
serted from throat of corolla; style lanceiform, about 5-6 mm. long, simple, the
stigma half the length of the style; fruits not known.

Costa Rica: inflorescencia helicoidal axilar color rojo castan
hierba de tallos carnosos y cuadrangulares, estipulas caducas, frutos
rojos, en horde de bosque 2 millas al norte de Diamantes, Gudpiles,
Pcia. Limon, alt. 150 m., Agosto 9, 1963, Jimenez 1054, (type, F);
flores rojo oscuro, arracimadas en la base del tallo, en bosque cercano
al Rio Toro Amarillo, 6 Km. al suroeste de Guapiles, Pcia. de Lim6n,
alt. 400 m., Julio 18, 1964, Jimenez 2127; forest floor, about 1.5 m.
tall, remnant forest near Tirimbina east of Rio Sarapiqui, Prov.
Heredia, alt. 150-250 m., 12-15 August 1971, Burger & Burger 8050.

One of the largest of the Costa Rican species, resembling H.
cauliflora Hemsl. of Guatemala. Distinguished easily from other
Central American species by the compact inflorescences usually on
leafless portion of the stem, the long narrow cucullate calyx lobes,
and the relatively small flowers.

Hoffmannia montana L. Wms. sp. nov.

Frutices graciles ramosissimi usque ad 3 m. altos. Folia opposita vel raro
ternata anguste ad late oblanceolata longe acuminata, ad basem attenuata glabra
vel subtus sparse pubescentia; inflorescentiae axillares, breviter pedunculatae,
pedunculi subfiliformes, pedicelli filiformes; hypanthium turbinatum; calyx ad
basem divisum, lobi triangulares usque ad 1 mm. longos glabri; corolla fere ad
basem divisam, lobi lineari-lanceolati acuti glabri; antherae lineares; stylus fili-
formis integer, stigma clavato-lanceiformia.

Much branched slender shrubs 1.5-3 m. tall. Branches at first somewhat
quadrangular and sparsely bifariously fulvous pubescent in the intervals, or soon
becoming terete and glabrous; leaves opposite or rarely ternate, narrowly to
broadly oblanceolate, long acuminate, attenuate to a short petiole, glabrous or
sparsely pubescent on petiole and nerves of under side of leaf but soon glabrous,
nerves 4-7(-8) pairs diverging at an obtuse angle, blades (3-)4-8 cm. long and
(0.6)2-3 cm. broad, petioles mostly 0.5-1.5 cm. long; inflorescence axillary, short-
pedunculate, 1 -few-flowered; peduncles subfiliform, 2-15 mm. long; pedicels fili-
form, mostly 3-10 mm. long; hypanthium and calyx at anthesis turbinate, '1 '.\
mm. long; calyx divided to or near the base, the lobes triangular, 0.5-1 mm. long,

56 FIELDIANA: BOTANY, VOLUME 36

glabrous; corolla white to pale yellow, up to 1 cm. long, lobate to near the base,
the lobes linear-lanceolate, acute, glabrous, 5-7 mm. long, the tube 1-2 mm. long;
stamens exserted in the throat, the filaments short, anthers linear, 2.5-3.5 mm.
long, exserted; style filiform, simple, about 5-8 mm. long, the stigma clavate-
lanceiform, undivided, 4-5 mm. long; mature fruits fleshy, to about 5-6 mm. in
diameter.

The type from Guatemala: slender shrub to 6 ft. high, flowers
white, heavy dicot forest, Volcan Zunil, Dept. Quezaltenango, alt.
8,000 ft., August 4, 1934, Skutch 936 (type, F). (Distributed as
Deppea sp.).

Additional specimens, in F, by collector and numbers:
Mexico: Matuda 2984, 4561.

Guatemala: Standley 67873, 67896, 67937, 68150, 68534, 68569,
68644, 85006, 85055, 85105, 85175, 85619, 86217, 86222, 86346,
86414, 86638; Steyermark 36409, 36810, 36814, 37296, 37395, 46676,
46855; Williams, Molina & Williams 25575, 26296; Williams, Mo-
lina, Williams, Gibson & Laskowski 26785, 27138.

This montane or cloud forest species has been confused with the
Mexican H. excelsa (HBK.) Schum., a species not known south of
the state of Veracruz but is easily distinguished by the undivided
style instead of the style with bifid stigma, other details of the flower
also help to distinguish the species.

The plant is common and often abundant in the rich cloud forest
on the slopes of the Sierra Madre facing the Pacific from Chiapas in
Mexico to San Marcos, Quezaltenango, and Suchitepe"quez in Gua-
mala.

Specimens available, as is commonly the case in Hoffmannia,
often lack corollas. Cystoliths, as in many Hoffmannias, are com-
mon in most parts of the plant.

Hoffmannia nicotanaefolia (Mart. & Gal.) L. Wins. comb. nov.
Psychotria nicotanaefolia Mart. & Gal. Bull. Acad. Brux. 11, pt. 1:
229. 1844 (phototype, F). Hoffmannia lenticellata Hemsl. Diag. PL
Mex. 30. 1879. Aegiphila hoffmannioides Standl. & Steyerm. Field
Mus. Bot. 23:277. 1947.

A fairly common plant in southern Mexico and in Guatemala,
rare in British Honduras and Honduras. It is distinguished by the
truncate or but shallowly lobate calyx, the corolla lobes twice as
long as the tube, the pedunculate cymose inflorescences shorter than
the petioles. The undersurface of the leaves and most especially the
mid-nerves have conspicuous, elongate, parallel cystoliths.

WILLIAMS: HOFFMANIA 57

Hoffmannia oreogena L. Wms. sp. nov.

Frutices fragiles parvi usque ad 2 m. alti. Folia elliptica vel oblanceolato-
elliptica abrupte acuminata, ad basem acuta vel cuneata, petioli longi graciles
fulvo-pilosi; inflorescentiae axillares cymoso-fasciculatae leviter pilosae pauci-
pluriflorae, pedunculi fere nuli, pedicelli graciles; hypanthium fere 3 mm. longum,
calyx brevis, lobi triangulares acuti leviter carnosi sparse pilosi; corolla profunde
4-lobata, lobi lineari-lanceolati acuti; stamina 4 exserta, antherae angusti-oblongae
2.5-3 mm. longae; stylus exsertus, stigma bifidum; fructus maturus ignotus.

Small fragile shrubs 0.5-2 m. tall, the stems usually much branched, terete,
glabrous or nearly so, the internodes up to 6 cm. long. Leaves elliptic or oblan-
ceolate-elliptic, abruptly acuminate, acute or cuneate to the petiole, with 10-14
pairs of lateral nerves, the blade 6-15 cm. long and 2-5 cm. broad, glabrous except
short fulvous-pilose along the nerves below, the petiole long and slender, fulvous-
pilose, to 4 cm. long; inflorescences axillary or at the nodes on older wood, cymose-
fasciculate, somewhat pilose, few-many-flowered, the peduncles almost none, the
pedicels slender, to 3 mm. long; hypanthium and calyx about 3 mm. long at an-
thesis, soon elongating to 6-7 mm. and cylindric, the calyx lobes sparsely fulvous
pilose with short multicellular hairs, triangular, acute, somewhat fleshy, about
0.5-0.75 mm. long; corolla deeply 4-lobate, about 8-9 mm. long, the tube about
4-5 mm. long and the linear-lanceolate acute lobes 4-5 mm. long; stamens 4, ex-
serted, the filaments attached below the throat of the corolla and at the base of
the anther, anthers narrowly oblong, 2.5-3 mm. long; style exserted, 8-9 mm. long,
the stigma bifid and 1-1.3 mm. long; mature fruit unknown.

Honduras: shrub 0.5-1 m., common in forest, El Portillo on Cor-
dillera de Merendon, 20 Km. from Nuevo Ocotopeque, Dept. Oco-
topeque, alt. 1,800 m., Aug. 28, 1968, Molina 22360; flores cremas,
arbusto 2 m., bosque nebuloso de Montana Verde, aldea Las Marias,
Cordillera Guajiquiro, Depto. La Paz, alt. 2,100 m., Mayo 23, 1964,
Molina & Molina U052 (type, F; EAP).

This cloud forest species is one of the easiest to distinguish of the
Central American mountain species. The small calyx with short
brownish hairs, the elongated hypanthium, the dense nearly sessile
inflorescences, and the bifid style are diagnostic. We have dis-
tributed the species as H. angustifolia to which it is probably not
closely allied.

Hoffmannia oreophila L. Wms. sp. nov.

Frutices vel arbores usque ad 5 m. Caules simplices vel ramosi teretes ob-
scure puberulenti vel glabrescenti; folia lineari-oblonga vel late oblanceolata
abrupte acuminata ad basem attenuata, petioli puberulenti; inflorescentiae axil-
lares subumbellatae vel subracemosae pedunculate ca. 6-florae, pedunculi graciles,
pedicelli subfiliformes; hypanthium urniformia, angulatum, calyx perbrevis, lobi
lati obtusi; corolla campanulata, lobi lanceolati acuti; stylus exsertus clavatus
integer.

58 FIELDIANA: BOTANY, VOLUME 36

Shrubs or small trees 1-5 m. tall. Stems simple or branched, terete, obscurely
puberulent but soon glabrous; leaves linear-oblanceolate to broadly oblanceolate,
abruptly short acuminate, attenuate to the base, principal lateral nerves 7-11
pairs, anastomosing near the margin, the blades 11-25 cm. long and 2.5-5.5 cm.
broad, the petioles obscurely puberulent, 1-1.5 cm. long; inflorescences in axils of
leaves or at nodes on older stems, abundant, subumbellate or subracemose, pedun-
culate, about 6-flowered, peduncle slender, about 1.2 cm. long or less, pedicels
subfiliform, 1-3 mm. long, hypanthium and calyx small, urniform at anthesis,
prominently angled, 2-2.5 mm. long, the calyx to 0.5 mm. long, the lobes broad
and obtuse, less than 0.5 mm. long, slightly marginate; corolla ca. 5-6 mm. long,
glabrous, white to pale yellow, campanulate, the lobes lanceolate, acute, about 4
mm. long and 1.5 mm. broad at the base, the campanulate tube ca. 2 mm. long,
stamens exserted, filaments attached near middle of corolla tube and above the
base of anthers, anther narrowly oblong, apiculate, about 4 mm. long; style ex-
serted, clavate, the stigma undivided, about 1 mm. long; fruits not known.

Nicaragua: flowers pale yellow, shrub 1-2 m. tall, common in
wet dense cloud forest area between El Triunfo and Fuente Pura,
above Santa Maria de Ostuma, Dept. Matagalpa, alt. 1,800 m.,
March 8, 1967, Molina 20361; flowers cream, shrub 3 m. tall, cloud
forest area at "Disparate de Potter," near Santa Maria de Ostuma,
Cordillera Central de Nicaragua between Matagalpa and Jinotega,
Dept. Matagalpa, alt. 1,500 m., February 20, 24, 1963, Williams,
Molina & Williams 24709 (type F ; EAP) ; flowers cream, tree 4 m.
tall, road to La Fundadora, cloud forest area north of Sta. Maria de
Ostuma, Cordillera Central de Nicaragua, Dept. Matagalpa, alt.
1,300-1,500 m., February 1963, Williams, Molina & Williams 24904;
montane rain forest or cloud forest, Cordillera Central de Nicaragua,
Dept. Matagalpa, alt. 1,500-1,600 m., Jan.-Feb. 1965, Williams et
al. 27663, 29166, 29214-

The specimens of this species, which have been distributed as H.
angustifolia Standl. all come from the very wet montane rain forest
or cloud forest on the summit of the Cordillera Central de Nicaragua.
Although we have collected in other high but disjunct cloud forests
in Nicaragua, this species has not been found in any of them. The
species does belong in the complex of cloud forest species found from
southern Mexico as far south and east as the locality where this
species has been found to be abundant. The short urniform hypan-
thium and calyx with much reduced and broad lobes, the campanu-
late corolla, the subumbellate or subracemiform inflorescences, the
clavate style will serve to separate this species. The specimens in
hand are uniform in being brownish in color (they were all originally
preserved by the formaline method) and quite distinct from most
other species in this characteristic.

WILLIAMS: HOFF MANIA 59

Hoffmannia quadrifolia Standl. & Steyerm. Field Mus. Bot.
23: 250. 1947.

The type of this Guatemalan species, Steyermark 42600, is inade-
quate and there is some question whether or not the plant is a Hoff-
mannia. The stems are shining and straw colored as in no other
species of Hoffmannia. The leaves are verticillate and quadrate.
Species with ternate or binate and ternate leaves mixed are not un-
common. We will leave the species in the "Flora of Guatemala,"
calling attention to its unusual characters.

Hoffmannia sessilifolia L. Wms., Phytologia 25: 463, fig. 1973.
Guatemala: Dept. Baja Verapaz, alt. 1,600 m., January 2, 1973,
Williams, Molina & Williams 41977.

Since the present paper was sent to press the above species was
collected and published. It is easily distinguished from H. ghies-
breghtii (Lem.) Hemsl., its nearest ally, by sessile and usually very
obtuse (at the base) or subcordate leaves and with the corolla tube
half as long.

Hoffmannia teruae Williams & Molina, sp. nov.

Frutices debiles usque ad 2 m. altos. Folia elliptica vel oblanceolata acumi-
nata glabra petiolata; inflorescentiae axillares fasciculatae sessiles; hypanthium
turbinatum; calyx fere ad basem divisum, lobi lineari-lanceolati acuti ciliolati;
corolla inter generis magnum, tubus angustus, lobi lineari-oblongi subacuti prope
apicem apiculatos; stylus simplex clavatus; bacca desideratur.

Weak forest shrubs to 2 m. tall. Stems glabrous, terete, flowering stems to
about 5 mm. in diameter, the internodes about 5 cm. long; leaves elliptic to ob-
lanceolate, acuminate, glabrous, with about 11-13 pairs of lateral nerves not
anastomosing, the angle rather acute, petiolate, the blade 10-22 cm. long and 2.5-
6.5 cm. broad, attenuate into the 1-3 cm. long petiole; inflorescences axillary in
the new growths, few-several-flowered nearly sessile fascicles, glabrous, peduncles
none, pedicels 2-3 mm. long; hypanthium turbinate and 1.5-2 mm. long at an-
thesis; calyx divided almost to the base, lobes linear-lanceolate, 2.5-3 mm. long
and 0.6-0.8 mm. broad, acute, ciliolate; corolla 16-18 mm. long at anthesis, the
tube narrow and 8-9 mm. long, the lobes linear-oblong, 8-9 mm. long and about
2 mm. broad, subacute and apiculate thickened at the apex; stamens inserted in
the throat of the corolla, the filaments rather thick, 3.5-4 mm. long, anthers linear,
obtuse, about 4.5 mm. long; style about 18 mm. long, simple, clavate thickened
at the apex and the stigmatic area about 4.5 mm. long; fruits not known.

Guatemala: shrub with pale green flowers, south facing slopes,
Volcan Atitlan, Dept. Solola, June 11, 1942, Steyermark 47359; flow-
ers pale yellow, weak shrub 2 m. tall, wet mountain forest near Aldea
Fraternidad, between San Rafael Pie de la Cuesta and Palo Gordo,

60 FIELDIANA: BOTANY, VOLUME 36

west facing slope of Sierra Madre Mountains, Dept. San Marcos,
alt. 1,800-2,400 m., Dec. 10-18, 1963, Williams, Molina & Williams
26028 (type, F; EAP).

An easily distinguished species because of the long narrow calyx
lobes, these as long as the hypanthium, the fasciculate inflores-
cences, the clavate style, and narrow oblanceolate leaves. The only
other species with long narrow calyx lobes in Guatemala is H.
calycosa Donn.-Sm., a quite different lowland species.

UNIVERSITY OF ILLINOIS-URBANA