BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
Camprivce, Massacuuserts, Jury 31, 1934 
Voi. 2, No. 9 
EPIDENDRUM CYSTOSUM, A NEW SPECIES 
FROM THE REPUBLIC OF HONDURAS 
BY 
OaKkES AMES 
THE FOLLOWING DESCRIPTION of Epidendrum cys- 
tosum, a new species of the genus Epidendrum, was pre- 
pared from specimens collected by James B. Edwards in 
the Republic of Honduras. 
Kpidendrum cystosum is a remarkable species with- 
out close allies. It is distantly related to 4. physodes 
Reichb.f., a native of Costa Rica. From 2. physodes it 
differs vegetatively in its obliquely ascending, chartaceous 
leaves, shorter stems and in the form of the labellum. 
It resembles 27. physodes in having a vesicular pouch ad- 
nate to the summit of the ovary at the base of the label- 
lum and in having the flowers suecedent, usually a single 
flower being open at one time. ‘The vesicular pouch in- 
dicates relationship with . prostratum (Lindl.) Cogn., 
(Physinga prostrata \.indl.), from British Guiana, a 
species regarding which little is known and whose generic 
status, notwithstanding Cogniaux’s conclusions, is still 
in doubt. Z.cystosum differs conspicuously trom £7. pros- 
tratum in having the sepals almost entirely free at the 
base, not united to form a cup ‘‘as in Masdevallia,”” and 
in having a dissimilar labellum, a simple gvnostemium 
and a vesicular pouch which is completely adnate to the 
ovary. 
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