Plants up to 32 cm tall. Leaves 3–8, basal, rosulate, petiolate; petiole up to two cm long;
blade up to nine cm long and 2.6 cm wide, elliptic to oblong-elliptic, occasionally ovate, acute to obtuse, glabrous. Peduncle erect, slender, glabrous below, glandular-pubescent
above, with three to four distant sheaths, terminated by a loosely 5–15-flowered raceme.
Flowers small, white, often spotted or veined with green or brown, sepals sparsely
glandular-pubescent on the outside. Floral bracts up to nine mm long, ovate-lanceolate,
acute to subacuminate. Pedicellate ovary up to 13 mm long, densely glandular. Dorsal sepal
up to five mm long and two mm wide, narrowly elliptic to lanceolate-elliptic, acute, 3-veined. Petals shortly unguiculate to subsessile, up to five mm long and two mm wide, obliquely elliptic-ovate with obtuse to rounded lobes, glabrous, veins 2, more or less branching. Lateral sepals up to six mm long and 3.2 mm wide, free to the base, obliquely ovate, acute to obtuse, 3-veined. Lip unguiculate, claw ca 1.2–1.5 mm long, with 2 small, long decurrent keels; lamina up to three mm long and five mm wide, often less, transversely elliptic, with truncate-rounded base and apex, concave to conduplicate, gibbose at base, disc with 3–5-veins more or less branching lateral veins, glabrous, 3-lobed; the middle lobe short, linear-oblong, obtuse; lateral lobes rounded. Gynostemium ca four mm long in total, shortly stalked (Fig. 11).

Ecology: No information about habit. Flowering in May and October, in January in Cuba.
Distribution: Peru, Ecuador, Colombia, Cuba. Alt. 2,400 m.

Notes: This species is characterized by the basal lip callus consisting of two keels decurrent gradually on prominent claw, a character not found in any representatives of P. rostrata
group