Plants up to 0.75 m above ground. Roots numerous, fascicled, white, mainly with distal swollen regions 20-50 mm long, 3-4 mm in diameter, on narrow bases 20-30 mm long, a few near stem ±50 mm long, swollen for whole length, gradually tapering. Fibrous sheathing neck up to 70 mm long, 20 mm wide; fibres very fine, somewhat reticulate, light fawn; base of sheaths purple on adaxial side; inner membranous cataphyll becoming lacy above and extending up the leaves ±30 mm beyond top of sheath. Leaves 3-7, erect; bases expanded, outer completely and inner partially sheathing; lamina linear, canaliculate, size varying, largest up to 880 x 8 mm, very gradually tapering to a point, dark green, coriaceous, parallel veins prominent; margin regularly and finely toothed. Raceme broadly cylindrical with rounded apex in flower, 40-100 mm long, up to 35 mm wide, with 50-200 flowers, in fruit up to 150 mm long, 18 mm wide; peduncle up to 450 mm long, 4 mm wide, terete; bracts 4 mm long, broad-based, attenuate, acuminate, membranous, white with light green or brown midrib. Flowers stellate, 9-10 mm in diameter, sometimes with a strong musty odour; pedicels 8-10 mm long, whitish in flower, becoming darker as fruits form. Tepals subequal, spreading, first green in bud becoming pale yellowish, then ivory-white when open. Filaments filiform, apiculate, 3.5 mm long, whitish. Ovary ovoid, 1.0-1.5 mm long, green. Capsule valves up to 5 x 2.75 mm, light fawn. Seeds up to 3.5 mm long, 2.5 mm wide, shiny black, surface finely granular, with a wing ±0.5 mm wide all round.
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Rhizomatous geophyte to 75 cm. Leaves linear, channelled, margins finely toothed. Flowers in a cylindrical raceme, ivory or pale straw-coloured, with musty odour.