AN ADDITION TO THE GENUS 
LEPANTHOPSIS 
BY 
OakrEs AMES 
A NEW sPEcIEs of Lepanthopsis (Cogn.) Ames, a na- 
tive of Colombia, differing from all known species of the 
genus in its conspicuously acuminate sepals, has appeared 
among collections made in 1922 by Ellsworth P. Killip. 
Lepanthopsis is a genus of exceptional interest. In 
its vegetative organs it suggests Lepanthes; in the gen- 
eral aspect of the flowers it recalls Pleurothallis, but in 
its generative structures it leans strongly toward that 
section of Stelis which is distinguished by having the 
stigmatic lobes widely separated. 
Lepanthopsis acuminata Ames sp. nov. 
Herba epiphytica, caespitosa. Caules secundarii ad- 
scendentes, monophylli, vaginis infundibuliformibus om- 
nino inclusi, vaginarum ostiis hispidis. Folium ellipticum, 
bene marginatum, breviter petiolatum. Inflorescentia fo- 
lium multo superans. Racemus multiflorus. Flores parvi. 
Sepala lateralia prope basim connata, lanceolata, valde 
acuminata. Sepalum dorsale lanceolatum, valde acumi- 
natum, uninervium. Petala oblongo-ovata, acuta. Label- 
lum cordatum, trinervium. Columna generis. 
A small caespitose epiphyte about 7 em. tall. Roots 
fibrous, glabrous. Stems slender, concealed by closely 
appressed tubular sheaths, monophyllous. Sheaths 7-10 
mim. long, smooth except for the minutely ciliate margins 
of the infundibuliform tips. Leaves 10-15 mm. long, 
6-8 mm. wide, elliptic-oblong or elliptic, obtuse, mar- 
ginate, shortly petiolate. Inflorescence produced from 
the axil of the leaf. Raceme 1.5-8 em. long, unilateral. 
Bracts of the inflorescence infundibuliform, about 1 mm. 
[ 70 ] 
