Herba variabilis, floribus aurantiacis (non viridibus), 
labelli apice maxima pro parte late rotundato (non retuso) 
atque columna antice glabra (non longe pilosa) a specie 
differt. 
Plant variabile, slender or stout, 15-75 cm. tall. Leaves 
usually present, basal, rosulate, more or less distinctly 
petioled ; lamina narrowly oblong to elliptic, more or less 
acute, about 18 cm. or less long, up to 8.6 em. wide. 
Stem finely pubescent especially above (rarely subgla- 
brous below), with several tubular membranaceous 
sheaths. Raceme short to elongate, several- (10) to many- 
flowered, with orange to dull brick-red flowers. Pedi- 
cellate ovary and sepals densely glandular-pubescent 
without. Dorsal sepal oblanceolate-linear, acute at the 
lightly cucullate apex, about 1.2-1.6 cm. long, 2.4-8.5 
mm. wide above. Lateral sepals connate into a subgib- 
bous sac below, with the recurved free portion obliquely 
linear-oblanceolate and about as long as the dorsal sepal 
but narrower. Petals strongly adnate to the dorsal sepal 
and somewhat smaller, narrowly spatulate-oblanceolate, 
acute to rounded at the apex. Lip strongly adnate to 
the column nearly up to its apex, about 1.3-2 cm. long 
and 5.5-7 mm. wide above, from the linear channelled 
basal portion, which is callose-thickened on each side of 
the somewhat broader base, dilated into an obovate apex 
traversed by a thickened mid-nerve, the upper portion 
being reflexed, broadly rounded and irregularly crenate- 
dentate. Column slender, glabrous, lightly arcuate above, 
extended into a prominent foot, the free part about 7.5— 
12 mm. long. 
Cuzco: Crapeza Valley, Piquillacta, at 3150 meters altitude, No- 
vember 3, 1928, F. L. Herrera 2181; Ollantaytambo, in a canyon, 
at about 3000 meters altitude, flowers antimony yellow, April 24, 
1915, O. F. Cook & G. B. Gilbert 281; Prov. of Cuzco, Pisac, on 
gravelly slopes, at 3100 meters altitude, perianth orange, November 
8, 1942, C. Vargas 2983; Prov. of Urubamba, Piri, at 2800 meters 
[8] 
