Plants up to 40 cm tall, erect or ascending. Leaves 3–5, basal, petiolate; petiole
3–4.5 cm long; blade five to nine cm long, 2.5–4 cm wide, elliptic to obovate-elliptic, acute, glabrous. Peduncle erect, apically glandular-puberulent, remotely 3-sheathed, terminated by a loosely several- to many-flowered raceme up to 10 cm long.

Flowers white, sepals sparsely pubescent-glandular externally. Floral bracts up to 10 mm long, ovate-cucullate, acuminate. Pedicellate ovary up to 15 mm long. Dorsal sepal up to 10 mm long and three mm wide, elliptic to ovate-elliptic, acute, 3-veined. Petals unguiculate; claw free part up to two mm long; lamina up to seven mm long and three mm wide, obliquely triangular-dolabriform, basally subauriculate, occasionally with a few, bristle-like papillae at the obtuse angles, veins 2, the outer one branching. Lateral sepals up to 10 mm long and five mm wide, free to the base, obliquely ovate, acute, 4-veined. Lip up to four mm long and 2.8 mm wide when spread, distinctly unguiculate; claw narrow; lamina 3-lobed, obcordate in general outline, disc at base with a pair of approximate calli; the middle lobe ligulate, obuse; lateral lobes obliquely triangular-obovate with obtuse apex. Gynostemium ca three mm long, rather massive, shortly stalked (Fig. 14).
Ecology: Terrestrial. Flowering in July and October.

Notes: In the time of description Schlechter (1921) classified this species in P. montana group and stated i.a. that it has much larger flowers and differently formed lip lamina. It is characterized by obcordate lip with a pair of approximate calli at the base of lamina.