Plants 35-180 mm long. Corm subglobose, 3-6 mm in diam., with curved basal teeth bent over a rounded base. Leaves few, basal, filiform, 30-180 x 0.3-0.5 mm, with very narrow grooves. Bracts sub membranous, purplish or greenish, inner with wide, fawn or brown-speckled or edged membranous margins. Flowers often single, 15-25 mm long, white or pale pink with a golden-yellow cup, outer segments with purplish blue stripes on the backs. Perianth tube 3-5 mm long, narrow in the lower half; segments 7-16 x 2.5-6 mm. Filaments 4-6 mm, orange-yellow; anthers 2-3.5 mm pale yellow. Style 7-9 mm; stigmas at or just above the anther tips. Capsules on suberect peduncles.
Like R. obscura but leaves 1-3. Flowers white to pale pink with yellow cup, filaments longer than anthers.