Leaves linear-oblanceolate, 15--65 × 0.7--3 cm, soft, glabrous, margin often somewhat undulate, minutely serrulate, apex acuminate. Scape 20--80 cm. Raceme sometimes few branched; bracts ovate to linear-lanceolate, 0.4--2.5(--5) cm, apex acuminate. Flowers usually paired, cylindric in bud; pedicel 0.5--1.8 cm, articulate proximally. Tepals white, linear, 1.5--3 × 0.1--0.3 cm, 3(--5)-veined; outer ones generally slightly narrower than inner. Filaments 0.5--1.2 cm. Anthers 1.1--1.6 cm (including appendages); basal appendages 2--3 mm, apex acute. Style 1.1--2.4 cm. Capsule ellipsoid or obovoid, 6--10 × 5--8 mm. Fl. and fr. Jun--Oct.
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