liati. Folia anguste lineari-oblanceolata, acuta vel obtusa. 
Inflorescentia uniflora, quam folia brevior. Sepala in 
tubum connata. Sepalum dorsale expansum late ovatum, 
aristato-caudatum, cucullatum, trinervium. Sepala later- 
alia lanceolata, aristato-caudata, trinervia, prope basim 
callo ornata. Petala subquadrata, pandurata, apice bilob- 
ulata. Labellum unguiculatum ;lamina obovato-sagittata, 
obtusa; unguis linearis, canaliculatus, basi biauriculatus. 
Columna generis. 
Small, caespitose, epiphytic herbs up to 6 cm. tall. 
Secondary stems up to 1.5 em. long, very slender, cylin- 
dric, unifoliate, covered with scarious bracts. Leaves 
2.5-4.5 em. long, 2-8 mm. broad, narrowly linear-ob- 
lanceolate, acute or obtuse, marginate or obscurely so. 
Inflorescence 1-flowered, much shorter than the subtend- 
ing leaf. Sepals connate into a short tube at the base. 
Dorsal sepal broadly ovate (when expanded), aristate- 
caudate, strongly cucullate; lamina about 4 mm. long 
and 3.5 mm. broad, 3-nerved; aristate cauda 2—-2.5 mm. 
long. Lateral sepals lanceolate, aristate-caudate ; lamina 
about 4mm. long and 1.5 mm. broad, 8-nerved, witha 
conspicuous callus near the base; aristate cauda 3-4 mm. 
long. Petals about 1.75 mm. long and 1.5 mm. broad, 
subquadrate, pandurate, bilobulate at the apex. Lip un- 
guiculate; lamina about 2 mm. long and 1.7 mm. broad, 
obovate-sagittate, obtuse; claw about 1 mm. long, lin- 
ear, canaliculate, biauriculate at the base. Column about 
2.5 mm. long, arcuate, with a lanceolate pendent tooth 
about 0.5 mm. long on each side toward the apex; col- 
umn-foot about 1.5 mm. long. 
Ecuapor: epiphytic, Lake Cuicocha, Province of Imbabura, at 3300 
meters altitude, sepals translucent with brilliant violet-purple mark- 
ings, lip slightly deeper purple, June 2, 1939, Penland & Summers 837 
(Typr in Herb. Ames No, 57872). 
[6 ] 
