Plants up to 600 mm long. Stem 120-350 mm long, often deflexed near the top in the fruiting stage. Basal leaf single, 0.8-1.5 mm in diam., with 5-8 narrow grooves. Bracts green or greenish, inner with wide, colourless or brown-speckled membranous margins. Flowers slightly smaller, white or cream in the upper half, buttercup-yellow in the lower half, fragrant. Perianth tube 4 mm long, cup-shaped; segments obtuse, subobtuse or emarginate, outer 6-9 mm wide, inner 9-13 mm wide. Filaments 3-4 mm; anthers 3-5 mm long, slightly spreading. Style 4-8 mm; stigmas not reaching the anther tips. Capsules on erect peduncles.
Like R. multisulcata but basal leaf solitary. Flowers white with yellow cup, fragrant. Fruiting pedicels erect.