Plants 150-400 mm long. Corm with a crescent-shaped basal ridge. Stem 20-250 mm long, usually extended above-ground, sometimes flexuose. Basal leaves 2, filiform, 150-400 x 0.5-1 mm, grooves very narrow. Inner bract green, with colourless membranous margins. Flowers 30-45 mm long, white, cup brownish or off-white, outer perianth segments on the backs with irregular pink or purplish brown and green markings. Perianth tube 5-8 mm long; segments elliptical (outer) and oblanceolate (inner), 25-35 x 7-11 mm. Filaments 6-7 mm; anthers about twice as long as the filaments, with attenuate connectives elongated 2.5-6 mm above the thecae. Style 12-16 mm; stigmas about halfway up the anthers. Capsules ellipsoidal on arcuate peduncles.
Cormous geophyte, up to 250 mm tall, corm with a crescent-shaped basal ridge. Leaves 3-5, only 2 basal, ± terete. Flowers white, streaked with pale blue-lilac, anthers with white, attenuate connectives extending up to 6 mm beyond thecae; outer bracts with narrow and inner with wide membranous margins.
Like R. schlechteri but flowers white or pale lilac with buff to brown cup, anthers with long-pointed appendages.