Trizeuxis falcata Lindley Collect. Bot. (1823) t. 2 
— Hooker Exot. FI. 2 (1824) t. 126—Cogniaux in Ur- 
ban Symb. Antill. 6 (1910) 627. 
Trizeuxis andina Schlechter in Fedde Repert. Bei- 
hefte 10 (1922) 52; ex Mansfeld in Fedde Repert. 
Beihefte 57 (1929) t. 141, nr. 552. 
A comparison of authentic material of T'rizeuais fal- 
cata from the type locality of Trinidad, supplemented 
by the plates above cited, with the description and anal- 
ysis of the Bolivian 7°. andina Schltr., shows that these 
concepts should be regarded as conspecific. 
The flowers of the Trinidad material examined seem 
to be exactly the same size as those of 7’. andina (not 
somewhat larger, as indicated), and the lip of the West 
Indian plant is, like 7’. andina, slightly broader at the 
base than above when expanded. At any rate, this char- 
acter appears to be variable and at most inconspicuous. 
This dainty little species extends from Costa Rica 
and Panama southward to Brazil, Bolivia and Peru, and 
also occurs on the island of Trinidad in the West Indies. 
Trichopilia fragrans (Lindl.) Reichenbach filius 
var. grata (Reichb,f.) C. Schweinfurth comb. nov. 
Trichopilia grata Reichenbach filius in Gard. Chron. 
(1868) 1838. 
As shown by the type description of T'richopilia grata, 
supplemented by a drawing of the inflorescence and an 
analysis of the flower from the Reichenbach Herbarium 
at Vienna, this concept is very similar to the widespread 
and variable 7. fragrans. Indeed, the single noteworthy 
difference between these species appears to rest on the 
central keel of the lip, which is rather low and uniform 
in JT. fragrans, but is rather conspicuous, dilated and 
abruptly cut off in front in 7. grata. 
The vegetative parts of 7. grata, although they are 
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