Inflorescences 1—2, shorter than to somewhat exceeding 
the leaves, up to 8 cm. long, commonly many-flowered, 
densely flowered above. Floral bracts small, but spread- 
ing and conspicuous. Flowers small, more or less secund, 
glabrous, yellow and purple or bright yellow. Sepals 
connate below, 8-nerved. Dorsal sepal ovate or broadly 
ovate, acute, about 3 mm. long and 2.4 mm. wide. Lat- 
eral sepals a little smaller, round-ovate, subacute. Petals 
much smaller than the sepals, transverse, suborbicular- 
oval, with a fleshy-thickened broadly rounded apex. Lip 
in natural position triangular-ovate, obtuse, fleshy, with 
a transverse, convex or subbilobed callus near the base, 
about 1 mm. long and wide. 
Peru: Cuzco, Prov. of Quispicanchis, Cachubamba, Marcapata, at 
2800 meters altitude, epiphyte, perianth yellow and purple, Decem- 
ber 12, 1943, C. Vargas 3818 (Tyre in Herb. Ames No. 65225); 
Prov. of Urubamba, Machu Picchu, at 2050 meters altitude, on rocks, 
perianth bright yellow, January 8, 1946, C. Vargas 5544 (this col- 
lection consists of a single plant which is much smaller throughout 
than the type). 
Stelis Herzogii Schlechter in Fedde Repert. Beih. 
12 (1918) 484; Mansfeld in Fedde Repert. Beih. 58 
(1980) t. 20, nr. 80. 
This concept, which has been noted as occurring only 
in Bolivia, has now been extended to Peru by the collec- 
tion cited below. These specimens show some discrep- 
ancies from the description. The inflorescences vary from 
one to eight, rather than from three to five, and are either 
shorter or longer than the leaf, reaching a length of 9 
em., rather than 5 cm. as cited. The dorsal sepal is com- 
monly 1.5 mm. long, instead of about 1 mm. long, and 
the lip is subquadrate-obovate, rather than rhombic- 
oval, as specified. 
Peru: Cuzco, Prov. of Quispicanchis, Hda. Itio, Marcapata, at 2000 
meters altitude, in sunny rocky places, flowers yellow, January 27, 
1943, C. Vargas 3114. 
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