Pleurothallis rhomboglossa Reichenbach fil. in Flora 
(1865) 276. 
This concept has been reported from Trinidad by 
Cogniaux and by Broadway as Pleurothallis rhombo- 
glossa. Mr. Leslie A. Garay, Mr. Charles Schweinfurth 
and I are in agreement that Pleurothallis rhomboglossa 
should be treated as a synonym of P. ovalifolia. 
Tosaco: Great Dog River Valley, October 12, 1937, Sandwith 1750 
(Herb. Ames 64122). 
Trinipap: January 18, 1846 (Herb. Trin. 412); Valencia, April 
1920, Britton s.n. (Herb. Trin. 9245); Base of Mount Tamana, April 
18, 1920, Britton, Britton & Hazen 1969 (Herb. Ames 20356); Matche- 
poorie, March 11, 1921, Britton & Britton 2221 (Herb. Ames 21 172); 
Arena Forests, near Cumuto, December 8, 1926, Broadway 6433 
(Herb. Ames 38347); Cumuto-Tumpuna Road, October 1, 1953, Ay- 
life 145 (Herb. Ames 67011); Diego Martin, May 1956, Downs & 
Aitken 94 (Herb. Ames 6701 1A). 
Pleurothallis plumosa Lindley in Bot. Reg. 28 
(1842) Mise. 72. 
Pleurothallis plumosa was described from material 
(Loddiges 13) said to have come from Trinidad. I have 
seen no collections referable to this species, however, 
with the single exception of the Downs & Aitken speci- 
men cited below, which represents a slightly atypical and 
rather cleistogamous individual. The species is known 
from Costa Rica, Venezuela and Trinidad. 
Trinipap: Morne Poin, alt. 1200 feet, June 9, 1955, Downs & Ait- 
ken 53 (Herb. Ames 67800). 
Pleurothallis velaticaulis Reichenbach fil. in Lin- 
naea 22 (1849) 824. 
Pleurothallis velaticaulis, known from Cuba, Venezuela, 
Peru and Middle America, has apparently hitherto not 
been cited from ‘Trindad. 
Trinipap: August 28, 1892, Hart s.n. (Herb. Trin. 4782; Herb. 
Ames 67818); Morne Bleu, February 7, 1922, Freeman s.n. (Herb. 
Trin. 10688); Between El Tucuche and Naranjo, January 2, 1948, 
Simmonds 235 (Herb. Trin. 14072; Herb. Ames 68182). 
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