labello luteo, lineari, parte basali carnosa, excavata, in medio 
marginis in disco decurrentibus, parte apicali membranacea, 
oblongo-lineari, apice erosa, toto labello usque ad 3.5 mm. 
longo, | mm. lato; columna erecta, cylindrica, usque ad 2 mm. 
longa, ovario cylindrico, sulcato, usque ad 2 mm. longo. 
Epiphytic, caespitose plants, up to 10cm. tall. Roots fascicu- 
late, filiform, glabrous. Secondary stem short, completely en- 
closed by tubular sheaths, up to 6 mm. long. Leaves fleshy, 
oblanceolate-spathulate, obtuse, tapering to a distinct petiole, 
up to6cm. long and 8mm. wide, commonly smaller. Peduncle 
slender, one-flowered, up to 8cm. long. Bracts tubular, as long 
as the pedicel, up to 5 mm. long. Flowers lemon-yellow to 
golden yellow, large for the section. Sepals connate into a 
dorsally ventricose tube, 10 mm. in length, free parts linear- 
oblong, obtuse to rounded at apex, up to 10 mm. long and 2 
mm. wide. Petals hyaline, linear, somewhat expanded at apex, 
subtruncate, apiculate in middle, the anterior margin with a 
long, fleshy keel, up to 3 mm. long and 0.5 mm. wide. Lip 
yellow, linear, basal half fleshy, excavate, with the margins 
decurved in middle onto the disc; apical half membranaceous, 
oblong-linear with erose apex, up to 3.5 mm. long and | mm. 
wide. Column erect, cylindric, with a distinct foot, up to2 mm. 
long. Ovary cylindric, sulcate, up to 2 mm. long. 
Venezuela: Rancho Grande PITTIER 13966! (AMES, US), 
DUNSTERVILLE 528! (AMES), STEYERMARK 89793! (AMES, 
VEN), PITTIER 11820! (AMES, G, US). 
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