nosis, apertis, viridi-flavis; sepalis inter se simillimis, 
oblongo-obovatis, apice obtusis, dorsaliter  cristato- 
carinatis, 3.5 mm. longis, 2 mm. latis; sepalis laterali- 
bus paululo obliquis; petalis suborbicularibus apice ro- 
tundatis, margine irregulariter denticulatis, dorsaliter a 
basi usque ad medium cristato-carinatis, 4 mm. longis, 
3.5 mm. latis; labello porrecto, oblongo-ligulato, apice 
rotundato, basi callo bipartito in medio excavato ornato, 
5mm. longo, 1.5 mm. lato: columna humili, 2 mm. alta; 
rostello valde evoluto, 2 mm. longo; ovario pedicellato 
3 mm. longo. 
Cotompia: Departamento de Antioquia; Heliconia. 1800 m. alt. 
Coll. Gilberto Escobar R. no. 104. Tyre! Tyrer in the Orchid Her- 
barium of Oakes Ames. 
This new species differs from Sphyrastylis Hoppu 
Schltr. in being much smaller vegetatively and in hav- 
ing a dissimilar lip. It is named in honor of my good 
friend, Sr. Gilberto Escobar R., who, through his col- 
lecting, has contributed much to our knowledge of the 
orchid flora of Colombia. 
Sphyrastylis cryptantha (C. Schweinf. & P. H. 
Allen) Garay comb. nov. 
Basionym: Oakes-A mesia cryptantha C. Schweinf. & 
P. H. Allen in Bot. Mus. Leafl. Harvard 
Univ. 13; 134, 1948. 
An examination of the type of Oakes-Amesia cryp- 
tantha convinces me that it is referable to the earlier 
described genus Sphyrastylis. With this transfer, the 
known geographical distribution of the genus Sphyra- 
styls includes Colombia and Panama. 
