the Costa Rican flowers referable to this species which 
we have seen differ from Schlechter’s drawing of the type 
and from the description in having the lateral sepals 
semi-connate below (as in the type of P. wnbraticola, the 
description notwithstanding) and in having a more or 
less distinctly pilose inner surface of the sepals as in P. 
umbraticola. Moreover, in all these Costa Rican speci- 
mens, as well as in P.wmbraticola, the lip has a keel near 
each margin of the dilated anterior portion, a character 
which is not mentioned in the description of either spe- 
cles. 
A collection from Mt. Roraima, British Guiana, is 
undoubtedly referable to this species, and has the 1- 
nerved petals of P.uwmbraticola. 
Recently we have received two collections from Gua- 
deloupe which, although the flowers were in a rather ad- 
vanced stage, surely represent P. vaginata. They show 
almost entirely connate lateral sepals and traces of two 
lateral nerves in the petals besides the strong mid-nerve. 
One plant has a stem up to 29 em. tall. 
Specimens from Peru show distinctly 3-nerved petals. 
A flowerless specimen (Buchtien 5036) from the same 
locality and altitude and of the same date as the type of 
P.umbraticola is almost certainly referable to this species. 
It has one leaf about 15 cm. long (exclusive of the peti- 
ole) and 7.8 cm. wide. 
The specimens which we refer to this species have the 
following data: 
Costa Rica, La Palma. Epiphyte, 2 to 3 dm. tall. At 1260 meters 
altitude. October 24, 1922. A.M. Brenes (2) 332; Epiphyte, 1.5-2.5 
dm. tall. At 1125 meters altitude. May 22, 1923. A.M. Brenes 586: 
Pejivalle. ‘‘Flowers deep maroon. Sepals hairy on interior surface. 
Lower sepals connate, bifurcate at tip.’’ C.H.Lankester 1162. 
Guabe tourer, Forét des Bains Jaunes. Forét dense subéquitoriale. 
At 850 meters altitude. March 30, 1935. H. Stehlé 22; At 700 meters 
altitude. October 26, 193[?]. H. Stehlé 413. 
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