This concept, which was originally described from St. 
Vincent, was reported by Cogniaux (l.c.) from Guade- 
loupe, Dominica and Martinique. It was subsequently 
found on Trinidad by W. E. Broadway and very recently 
was collected on the lower slopes of Mt. Britton, To- 
quillo, Puerto Rico by D.S. Correll and H. F. Winters. 
A surprising extension of range is shown by a Peru- 
vian collection of #. vincentinum from Cuzco, Province 
of Paucartambo (C. Vargas 006793). 
The Costa Rican Hpidendrum serricardium is obvious- 
ly reducible to this concept, the description being almost 
an exact counterpart of that of 7. vincentinum. 
The flowers of all the material examined, whether from 
the West Indies, Costa Rica or Peru, appear to be some- 
what larger than those described for E. vincentinum and 
the disc of the lip appears to have commonly one to three 
more or less distinct keels. The color of the flowers varies 
from pale green or greenish yellow, often tinged with 
bronze, to russet or mahogany-red and pale yellow, and 
the leaves are sometimes noted as violet or purple. 
Dichaea muricata (Sw.) Lind/. var. maculata 
(Poepp. & Endl.) C. Schweinfurth comb. nov. 
Dichaea maculata Poeppig & Endlicher Nov. Gen. ac 
Sp. 2 (1838) 3, t. 105, figs. 1-6; Cogniaux in Martius 
Fl. Bras. 8, pt. 6 (1906) 489. 
The concept Dichaea maculata, which is limited to 
Peru, has been considered to be amply distinct from D. 
muricata, Which was originally described from the West 
Indies, for two reasons. First the leaves of D. maculata 
are seen to be distinctly ciliolate near the apex, whereas 
those of D. muricata appear to be entire or nearly so at 
the apex. Secondly, the lip of D. maculata was described 
and figured as provided with a relatively long linear claw 
with the lamina rounded in front, while the lip of D. 
Lae | 
