Plants mostly 80-150 mm high. Corm bell-shaped with flat base, 10-18 mm diam.; tunics woody, margins denticulate. Stem often branching from near base and from axil of uppermost leaf. Leaves 3, all basal or uppermost subbasal, lanceolate to falcate, reaching to ± middle or stem, 2-7 mm wide, slightly fleshy, main vein not visibly thickened, upper leaf sheathing stem with short free unifacial tip. Spike lightly flexuose, (2)3-to 7-flowered; bracts 10-14 mm long, green, often red along upper margins, divergent. Flowers salver-shaped, crepuscular, pale yellow, outer tepals flushed light brown outside; perianth tube slender, straight, 12-14(-16) mm long; tepals subequal, ovate, slightly spooned, 7-9(-10) x 4-5 mm, spreading ± at right angles to tube when fully open after 15:00. Filaments ± 2 mm long, inserted at tepal bases; anthers ± 4 mm long, erect, yellow; pollen yellow. Style branches ± 12 mm long, dividing in middle of tube, exserted ± 7 mm, then weakly diverging, reaching to ± upper 1/3 of anthers in closed flower. Capsules oblong-obovoid, (6-)7-9 x ± 4 mm. Seeds ± globose or weakly angled, ± 1.3 mm diam.
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Like H. falcata but leaves always 3, crowded at the base, flowers pale yellow and perianth tube 12-16 mm long, exceeding the tepals.