leged to be distinct from the related 7°. parviflorus by 
reason of the bristle-like setae on the column and at the 
base of the lip. However, a similar area of bristle-like 
hairs appears on the column and on the lip of specimens 
referable to 7. parviflorus, and a wide range of variability 
in degree and prominence of the hairs is evident on the lip 
of various collections referable to that species. Moreover, 
an excellent photograph of 7°. muscifer bearing a floral 
analysis does not show any appreciable disparity from a 
Bolivian collection (Mandon 1149) determined by Reich- 
enbach filius as exemplifying 7° parviflorus and from 
several Peruvian collections lately determined as repre- 
senting the latter species. It is noteworthy that the se- 
pals and petals of 7°. muscifer are described as obtuse, 
whereas the analysis shows them to be acute or acuminate. 
A peculiarity of this species is that the basal part of 
the lip occasionally bears a more or less marked, central, 
longitudinal fleshy ridge or thickening, sometimes re- 
sembling a keel. In one flower of 7°. parviflorus from 
Bolivia (Mandon 1149) such a keel is evident on the basal 
portion of the lip of one flower, while a bud from that 
same collection shows a lip that is quite ecarinate or ecal- 
lose, thus indicating a variable condition. 
As now understood, T'richoceros parviflorus extends 
from Colombia (type), Ecuador and Peru to Bolivia. 
Dichaea pendula (4 wb/.) Cogniaux in Urban Symb. 
Antill. 4 (1908) 182, 6 (1910) 670; in Martius F 1. Bras. 
3, pt. 6 (1906) 486, t. 102, fig. 1, excl. synon. in part. 
Limodorum pendulum Aublet Pl. Guian. 2 (1775) 819, 
t. 322. 
Dichaea echinocarpa Lindley Gen. & Sp. Orch. (1833) 
208, non Mpidendrum echinocarpon Swartz nec Cym- 
bidium echinocarpon Swartz. 
Dichaea echinocarpa (Sw.) Lindley var. lobata Ames 
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