Leaves 0.5-1.0(-2.0) mm in diam. Inner bract sometimes slightly longer and wider than the outer. Flowers buttercup-yellow, usually with a dark reddish brown blotch or three dark lines on each segment, outer segments with brownish black lines and feathered veining or speckling on the backs. Perianth tube often cup-shaped. Anthers (3-)6-9 mm long, dark brown or sometimes yellow.
Cormous geophyte, 8-15 cm, corms rounded at base with coarse, bent teeth. Basal leaves several. Flowers yellow with brown streaks or blotches.
Like R. atrandra but flowers yellow with brown streaks or blotches around the cup.