Plants mostly 120-350 mm high. Corm 15-20 mm diam.; tunics of coarse, dark, rigid fibres often covered with white, mealy substance. Stem either contracted, with branches produced near ground, or extended with branches produced from base and at aerial nodes; upper nodes with sheathing leaves ± as long as spathes; stem becoming loosely coiled in fruit. Foliage leaves 2, linear, flat but helically coiled from base or middle, either upright and exceeding stem, or spreading, 2.5-5.0 mm wide, with broad translucent band on adaxial midline, usually with prominent submarginal veins. Rhipidial spathes becoming dry above or completely, then ± translucent with prominent veins, inner (34-)37-45 mm long, outer slightly shorter. Flowers fugaceous, dark blue-violet, outer tepal limbs with white nectar guides at bases, ± half reflexed, odourless; outer tepals 21-30 x 10-15 mm, claws ± 1/3 as long as limbs, inner tepals 20-26 x 7 mm long, limbs half reflexed. Filaments 5-6 mm long, united in lower 1.5-3.0 mm; anthers 4.5-6.5 mm long; pollen yellow. Ovary ± cylindric, subsessile, 32-38 mm long, fertile part ± 10 mm long; style branches 8-10 mm, diverging, crests (4-)7-11 mm long, ± linear. Capsules ellipsoid, 15-20 mm long. Seeds angular, relatively large.
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Cormous geophyte, 100-250 mm tall. Leaves 2, spirally coiled, surface plane, translucent along midline. Flowers enclosed by translucent spathes, blue, nectar guides cream and yellow, tepals lightly reflexed.
Cormous geophyte, 10-25 cm. Leaves 2, surface plane, translucent along midline, entire blade helically coiled. Flowers dark blue, nectar guides cream-coloured, inner tepals reflexed.