Plants 150-300(-450) mm high. Corm depressed-globose, 18-40 mm diam.; tunics coarsely netted. Stem simple or rarely with 1 or 2 suberect branches. Leaves 4 to 6, lower 3 or 4 ± basal, uppermost leaf partly or entirely sheathing stem, ± half as long or as long as spike, linear to linear-lanceolate, 2-8 mm wide, midrib and margins lightly thickened and hyaline; bract-like cauline leaves 2 or more, sheathing. Spike 3-to 6-flowered; bracts herbaceous and green, dry and brownish apically, 20-25 mm long, inner ± as long as or slightly longer or shorter, barely forked apically. Flowers zygomorphic, dull to bright scarlet, purple or translucent pink; tepals usually with dark median line; perianth tube with lower part 20-24 mm long, emerging shortly from bracts, upper part ascending to horizontal, subcylindric, 18-24 mm long, 5-6 mm diam. at mouth; tepals obovate, 16-23 x 8-12 mm, all widely spreading or dorsal somewhat hooded. Filaments unilateral, arcuate, 25-30 mm long, well exserted from tube; anthers 5-8 mm long, violet. Style dividing between middle and apex of anthers, branches ± 5 mm long. Capsules large, often somewhat inflated, narrowly obovoid-ellipsoid, 20-25 x 10-14 mm. Seeds 8-12 mm long, either 2-winged or with large asymmetrical circumferential wing.
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Cormous geophyte, 14-40 cm. Leaves sword-shaped. Flowers purple, pink or scarlet, tubes elongate. Capsules oblong.