Rhizome thick, branched. Leaves 75-100 cm ( 7-12 mm, lanceolate, almost ensiform, longer than stem. Peduncle (stem) up to 90 cm, sheathing leaves mostly lanceolate, acute, 3-4 flowers at apex, 1-2 in lateral clusters. Flowers (6-) 7-8 (-10) cm in diameter, white, dingy white-yellow or grey-purple, sometimes golden yellow; falls elliptical, narrowing abruptly into haft, which is longer than blade; standards upright; crest small. Anthers 1.4-1.8 cm long.