The leaves of H. F'riderici-Guilielmi appear to range 
from oblong-elliptic to oblong-obovate and from 15 to 28 
em. long and as much as 8 em. wide, while those of //. 
Huacapistanae are oblong-lanceolate or oblong-elliptic 
and up to 14 em. long and 2.5 em. wide. The raceme of 
I. Huacapistanae is also much shorter than that shown 
by BH. Friderici-Guilielmi; but its floral segments, while 
markedly smaller than those of typical H. F’riderici- 
Guilieclmi, seem to be of almost exactly the same form, 
contour and color in the two concepts. Moreover, the 
two species were collected at nearly the same altitude. 
The Bolivian specimen referred to is a vegetatively large 
plant of quite the aspect and size of typical 7. Friderici- 
Guilielmi but with budded flowers whose segments are 
intermediate in size between the two forms. 
Epidendrum frigidum Linden ev Lindley in Bot. 
Reg. 31 (1845) Mise. p. 76, no. 48; Lindley Fol. Orch. 
EK. pidendrum (1858) p. 89, no. 286. 
Epidendrum macrodonax Schlechter in Fedde Repert. 
Beih. 9 (1921) 88; ex Mansfeld in Fedde Repert. Beih. 
57 (1929) t. 119, nr. 467. 
A collection from Cuzco, Peru (Herrera 2119) is sure- 
ly referable to the Venezuelan EMpidendrum frigidum 
which is represented in the Ames Herbarium by a photo- 
graph of the type bearing an analytical drawing of the 
lip. It differs from this type, however, in having appar- 
ently larger flowers with a verrucose outer surface to the 
sepals—a character which is not mentioned in the type. 
The dorsal sepal, which is lanceolate-oblong, is about 11 
mm. long and the obliquely lanceolate lateral sepals are 
about 12 mm. long. 
The Peruvian L/pidendrum macrodonax trom Huanuco, 
which reaches a height of 8 meters, varies from the Her- 
rera collection of 22. frigidum only in having somewhat 
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