Platystele microtantha (Sch/tr.) Garay comb. nov. 
Basionym: Pleurothallis mirotantha Schltr. in Fedde 
Rep. 3: 276, 1907. 
Synonym: Pleurothallis perparva Standl. & L.O.Wms. 
in Ceiba 8: 1938, 1953. 
This miniature species until now has been known only 
from Costa Rica. A collection by F.C. Lehman s.n., 
from the vicinity of Buenaventura in Colombia, extends 
its range to the mainland of South America. 
Platystele misera (Lindl.) Garay comb. nov. 
Basionym: Pleurothallis misera Lindl., Folia Orch. 
Pleurothallis 86, 1859. 
Synonym: Humboldtia misera O.Ktze., Rev. Gen. PI. 
pt. 2: 668, 1891. 
This species, formerly known only from Peru, is now 
represented in the Orchid Herbarium of Oakes Ames by 
several collections from Colombia. 
Scaphosepalum carpophorum (Krz/.) Garay 
comb, nov. 
Basionym: Masdevallia carpophora Krzl. in Fedde Rep. 
17: 427, 1921. 
Synonym: Scaphosepalum Endresianum Krzl. in Fedde 
Rep. 17: 435, 1921. 
An examination of the types of both, Masdevallia 
carpophora and Scaphosepalum Endresianum indicates 
that they are conspecific. Both types were collected by 
Endres in Costa Rica. 
Porroglossum amethystinum (Pchb.f.) Garay 
comb, nov. 
Basionym: Masdevallia amethystina Rchb.f. in Otia Bot. 
Hamb. 1: 14, 1878. 
Synonym: Porroglossum colombianum Schltr. in Fedde 
Rep. Beih. 7: 88, 1920. 
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