Plant to c. 20–30 cm. tall. Stem c. 2 mm. diam., smooth; lower internodes short, upper sts longer than adjacent lvs. Lower lvs rarely forming close rosette; lamina us. c. 5 cm. long, broad-elliptic, subacute, margins often crisply and finely undulate, narrowing to short petiole. Upper lvs foliaceous, sessile, the uppermost sheathing, us. smallest, often reaching but rarely overtopping fl. Fl. solitary, erect, per. often whitish. Dorsal sepal 2.5–4 cm. long, us. smoothly arcuate throughout its length, tip acuminate to shortly caudate, ascending to curved downward; lateral sepals diverging at a narrow angle, tips caudate and overtopping galea. Petals shorter than dorsal sepal acuminate. Labellum narrow-triangular, arched almost in a right angle, protruding, apex narrowly obtuse, margins slightly upturned. Column much shorter than labellum; stigma narrow-oblong, flat.
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