Plants 80-300 mm long. Corm with a wide crescent-shaped basal ridge sometimes forming an almost complete circle. Stem up to 150 mm long or short and hidden. Basal leaves 2 or more, filiform, 60-300 x 0.5-1 mm, grooves rather narrow. Bracts green, inner with brown-edged or brownish membranous margins. Flowers 20-45 mm long, shiny buttercup-yellow, with a dark brown blotch sometimes reduced to dark veins on each segment in the throat, outer segments reddish brown on the backs or with faint feathered veining. Perianth tube 4-6 mm long; segments 15-35 x 5-10 mm, obtuse to subacute. Filaments 5-6 mm; anthers 4-8 mm long, yellow. Style 10-15 mm; stigmas about at the anther tips. Capsules shortly cylindrical, on widely patent peduncles.
Cormous geophyte, 5-15 cm, corm with a wide basal ridge, basal ridge fibrous, stem often branching above ground. Basal leaves 2. Flowers yellow with dark streaks or blotches.