Plants up to 23 cm tall, erect. Leaves 1–4, basal, petiolate; petiole up to 5.5 cm long, canaliculate; blade up to 12 cm long and four cm wide, oblong elliptic to broadlyoblanceolate, acute to acuminate, cuneate at the base, glabrous. Peduncle finely glandular-pubescent, 2–3-sheathed, terminated by a laxly few- to several-flowered raceme up tonine cm long. Flowers rather small, lilac, sepals glandular-pubescent on the outer surface.  Floral bracts five to nine mm long, lanceolate, acuminate, glandular. Pedicellate ovary up to 12 mm long, densely glandular-pubescent. Dorsal sepal 6–7.5 mm long, 2–3.1 mm wide, elliptic to elliptic-ovate, acute, 5-veined, veins branching or simple. Petals unguiculate, claw free part ca two mm long; blade six to seven mm long, 3–3.5 mm wide, obliquely triangular, subacute to obtuse, truncate at the base, 1–2-veined, veins branching, glandular on outer margin. Lateral sepals seven to eight mm long, 4–4.5 mm wide, free to the base, obliquely broadly elliptic to elliptic-ovate, subobtuse, 5-veined, veins branching. Lip unguiculate, claw ca two mm long, with a pair of erect, triangular calli; lamina two to three mm long, ca three to six mm wide, broadly triangular in general outline, with two somewhat thickened plates on both sides of midvein, cordate at the base, truncate at the apex, sharply 3-lobed in front; the middle lobe 0.6–1.5 mm long, ligulate, obtuse, canaliculate; lateral lobes semiobovate. Gynostemium 2.5–3 mm long, massive, shortly stalked (Figs. 16 and 17).
Ecology: Terrestrial in evergreen hard-leaved bushwood consisting of trees and shrubs in the shadow. Flowering in April.

Notes: This species is rather similar to P. microglossa, but it differs from the latter by the form of petals and lip. Petals have truncate base and the lip is broadly obtriangular with two thickened spots. Both Colombian collections cited above differ from the type specimen by having rounded basal margin of petals. Otherwise, they are similar