UM LEAFLETS 
HARVARD UNIVERSITY 
A NEW GENUS OF THE SOBRALIEAE 
BY 
OakKES AMES AND CHARLES SCHWEINFURTH 
In 1986, our attention was called to an extremely puz- 
zling orchid discovered by Walter R. Lindsayin Panama. 
The general aspect of the plant suggested some species 
of Sobralia, but the structure of the lip, with two basal 
calli similar to those found in Elleanthus, and the details 
of the column indicated differences sufficiently weighty 
to warrant recognition of a distinct genus of the Sobral- 
ieae standing between Sobralia and Elleanthus. 
Lindsayella Ames & Schweinfurth gen. nov. 
Divisio: Acrotonae. Tribus: Polychondreae. Sub- 
tribus: Sobralieae. Perianthii partes liberae, basi cam- 
panulatae, superne patenti-recurvatae. Sepala similia, 
elliptico-lanceolata. Petala elliptica, sepalis latiora. La- 
bellum inferne columnam circumdans, superne patens, 
simplex, apice bilobatum, basi cum callis binis approxi- 
matis et superne cum carina singula undulata ornatum. 
Columna gracilis, apoda, apice dilatata; rostellum trilo- 
batum cum lobo intermedio brevissimo lato emarginato. 
Anthera incumbens, persistens, bilocularis cum loculis 
bicellularibus. Pollinia octo, in paribus cum glande rigida 
connexa. 
Herba terrestris vel epiphytica. Folia disticha, pauca, 
perangusta. Vernatio foliorum duplicativa sed in siccitate 
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