BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
MBER 19, 1934 Vou. 3, No. 
Campripar, MaAssacHuseTts, SEPTE 
NOTES ON MEXICAN EPIDENDRUMS 
BASED LARGELY ON THE 
ERIK M. OSTLUND COLLECTION 
BY 
Oakes AMES, EF. TRAcy HUBBARD 
AND CHARLES SCHWEINFURTH 
THE MEXICAN SPECIES Of Epidendrum have caused 
more difficulty, in our study of the genus, than those of 
any other portion of tropical North America. ‘wo reasons 
for this may be given: first the scarcity of collections 
coming from this region and secondly the unrecognizable 
specific descriptions in two of the more important publi- 
cations on Mexican orchids. These publications are No- 
vorum vegetabilium deseriptiones—Orchidianum opus- 
culum by La Llave and Lexarza, and Orchidiographie 
mexicanae (in Ann. Sci. Nat.ser.3,3 (1845 )) by A. Richard 
and H.G. Galeotti. 
The study of the collection of Epidendrums repre- 
sented in the herbarium of Mr. Erik M. Ostlund of Cuer- 
navaca, Morelos, Mexico has aided us not only to form 
a clearer conception of several doubtful species, but also 
to gain asurer knowledge of the characters of many little- 
known species. It contains seventy-two different forms, 
of which four are new species, three extend the known 
range (I. conopseum R. Br., £. Schlechterianum Ames 
and H.verrucosum Sw.) and four represent species which 
were very inadequately known. 
[1] 
}) mt {I 
