Pleurothallis ciliata Knowles & Westcott Flor. Cab. 
] (1837) 39, t. 19. 
Cogniaux did not cite this species as native to ‘Trini- 
dad. It is known from Colombia, Peru, British Guiana 
and ‘Trinidad. 
Trinipap: Agua Santa, Arima, April 16, 1908, Broadway 2341 
(Herb. Ames 10643); Caparo, January 1, 1915, Broadway s.n. (Herb. 
Trin. 7840); Cedros, April 5, 1918, Sankeralli s.n. (Herb. Trin. 8791); 
Quare River, January 25, 1930, Broadway 7449 (Herb. Ames 37545, 
66919). 
Pleurothallis diffusa Poeppig & Hndlicher Nov. 
Gen. ac Sp. 1 (1835) 49, t. 86. 
Known in the Andean regions from Bolivia and Peru 
north to Colombia, Pleurothallis diffusa is not enumer- 
ated in Cogniaux’s orchid list of ‘Trinidad. 
Trinipap: (Herb. Trin. 6432); Aripo, November 11, 1863 (Herb. 
Trin. 1818); Heights of Aripo, April 11, 1922, Broadway s.n. (Herb. 
Trin. 10567); Downs & Aitken 83 (Herb. Ames 678451). 
Pleurothallis discoidea Lindley in Bot. Reg. 31 
(1835) sub t. 1797. 
Pleurothallis leptopetala Cogniaux ex Urban Symb. 
Antill. 6 (1910) 698. 
It seems that Cogniaux’s Pleurothallis leptopetala rep- 
resents the same species concept as Lindley’s P. discoidea 
and must, consequently, be reduced to synonymy. 
Pleurothallis discoidea was described on the basis of a 
specimen from Trinidad, but the original and subsequent 
descriptions (Lindley in Fol. Orch. (1859) Pleurothallis 
19; Grisebach, Fl. Brit. W. Ind. Isl. (1864) 608; Cogn- 
iaux, loc. cit. 406) are short and lack detail. With the 
original description, Lindley refers to a drawing in the 
Hooker Herbarium (‘‘v. ic. pict. in hb. Hooker’’), but 
this illustration appears to have been lost. Mr. Victor 
A. Summerhayes has sent from the Lindley Herbarium 
atracing of the rough ink copy of the original drawing. 
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