Flowering plant to 50 cm tall. Leaves usually 3–6, narrow-linear, grass-like, to 20 cm long, in loose, erect tussock. Flowers 1–4, drooping, bright yellow with an orange labellum, dark streaks present on both sides of labellum and dorsal sepal; pedicel enclosed within bract; dorsal sepal projected forward or obliquely erect, ovate, to 17 mm long, margins sometimes irregular; lateral sepals obliquely defiexed, parallel, linear-lanceolate, to 25 mm long, greenish; petals spreading or drooping, to 25 mm long, claw green, lamina narrow-ovate or elliptic, yellow. Labellum to 28 mm long, orange, often with brownish streaks; lateral lobes small, oblong, with irregularly toothed margins; mid-lobe broadly wedge-shaped, outer margins often irregular, callus of 2 widely separated, pubescent, longitudinal ridges, extending onto base of mid-lobe, uniting and continuing as single ridge nearly to the apex. Flowers Sep.–Nov.