Secondary stems up to 4 cm. long, slender, mono- 
phyllous, caespitose, concealed by closely appressed 
sheaths. Leaf 6-13 cm. long, about 1 em. wide, nar- 
rowly oblong-lanceolate, conspicuously tridentate at the 
apex with the middle tooth subulate and exceeding the 
somewhat larger lateral ones; lamina contracted toward 
the sulcate, slender base. Raceme 8-11 cm. long, borne 
on a slender elongated paucibracteate peduncle. Bracts 
of the raceme obliquely infundibuliform, 1-1.5 mm. long, 
about 2 mm. apart. Pedicels exceeding the bracts, slen- 
der, somewhat nodding. Flowers pale green, 3-4 mm. 
in diameter. Lateral sepals ovate-elliptic, about 2 mm. 
long, 1 mm. wide, 3-nerved, glandulose on the inner sur- 
face. Dorsal sepal similar. Petals 1 mm. long, hardly 1 
mim. wide, subquadrate, imperceptibly if at all thickened 
at the apex, obscurely apiculate, l-nerved. Labellum 
about 0.75 mm. long, cucullate, obscurely apiculate with 
a thickened septum below the middle. Column equalling 
the petals with the stigmatic processes elliptical and lat- 
erally produced. 
Stelis planipetala, in the structure of the labellum, 
resembles S.cucullata Ames. The glandulose sepals and 
the imperceptibly thickened one-nerved petals serve to 
distinguish it. 
Cosra Rica: Province of San José, vicinity of Kl General. At 
1130 meters altitude. On mossy trunk in open woods. Flowers green- 
ish white. August 1936. Alexander F. Skutch 2825 (Type in Herb. 
Ames No, 49252), 
Stelis Skutchii 4 mes sp. nov. 
Herba epiphytica. Caules secundari graciles, mono- 
phylli, vaginis tubularibus vestiti. Folium coriaceum, 
anguste oblongum, utrinque attenuatum. Racemus mul- 
tiflorus, folium excedens. Bracteae racemi urceolatae. 
Flores nutantes, purpurei. Sepala lateralia ovato-lanceo- 
[17 ] 
