Perennial, geophytic herb, 250-600 mm high. Leaves opposite and decussate; blade 22-44 x 8-25 mm, oblong to triangular; petioles 2-4 mm long. Inflorescences 3-10 per stem, 4-10-flowered; peduncles 1-4 mm long; pedicels 8-10 mm long. Flowers: corolla lobes 8-11 x 4-7 mm, slightly cucullate, dorsally greenish brown or purplish, ventrally green, striped with reddish brown; dorsal surface glabrous, ventral surface glabrous, margins minutely ciliate; corona 3-4 mm long, green, ventrally with a stout appendage of two finger-like processes 2-3 mm long flanked by two vertical wings. Pollinia attachment subterminally; gynostegium reddish brown or purple. Flowering time Nov.-Feb. Fruit 55-65 mm long.
Perennial herb, 0.25-0.60 m high. Corolla 8-11 mm long, lobes slightly cucullate. Corona appendage 2-3 mm long, appendage greatly exceeding subtending lobe; corpusculum with broad opaque flanges. Flowers greenish brown or purplish outside; inside green striped with reddish brown or purple; corona green.