CENTRAL AMERICAN ORCHIDS 
sepal 2.5 mm. long, about 1 mm. wide, very unlike the lat¬ 
eral sepals, and with them giving a bilabiate aspect to the 
flower, 3-nerved, oblong, obtuse. Petals about .75 mm. 
long, broadly flabellate, thickened. Labellum .75 mm. long, 
subquadrate, rather thin below the middle, much thickened 
near the apex, strongly concave in front of the obtuse tip, 
3-nerved. Column about equaling the petals in length, 
3-lobed at the summit. 
Stelis inaequalis is without near allies in the Central 
American flora. The unequal sepals and very distinctive 
labellum are differentiating characters. 
Panama, Near San Juan in the foothills of the upper 
reaches of the Chagres River, C. W. Powell 272. Growing 
on upper side of large limbs of trees. Flowers chocolate- 
brown. Flowers in January and February. Sea level. 
(Type in Herb. Ames No. 23748.) 
Stelis Sanchoii Ames sp. nov. In habitu S. mi- 
crochilae Schltr. similitudinem gerit. Radices fibratae, 
patentes, albidae, glabrae. Caules secundarii abbreviati, 
vaginati, nervis vaginarum in sicco longitudinaliter promi- 
nentibus, monophylli. Folium coriaceum, anguste elliptico- 
lanceolatum, in petiolum sulcatum elongatum contractum. 
Pedunculus cum racemo folium permulto excedens, infra 
racemum paucibracteatus. Racemus elongatus, multi- 
florus, vix flexuosus. Bracteae inflorescentiae oblique in- 
fundibuliformes, in sicco brunneae, inter se satis distantes. 
Pedicellus cum ovario bractea vix longior. Flores bi¬ 
colores. Sepala lateralia usque ad medium cohaerentia, 
ovata, trinervia, obtusa. Sepalum dorsale simile. Petala 
flabellata, apice valde incrassata. Labellum valde in- 
crassatum, basi breviter cuneatum, prope basim transverse 
calloso-incrassatum, antice semiorbiculare, oblique excava- 
tum. Columna usque ad apicem dilatata, utrinque lobata. 
Roots fibrous, whitish, spreading. Secondary stems 
caespitose, about 5 mm. long, concealed by tubular brownish 
sheaths, monophyllous. Sheaths nearly 1 cm. long, when 
dry prominently nervose. Leaf with the petiole about 2.5 
cm. long, the narrowly elliptic-lanceolate lamina 1.5 cm. 
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