Plants 40--50 cm tall. Rhizome submoniliform, 0.7--1.5 cm thick. Stem hispidulous or hirsutulous distally. Leaves 5--8, subsessile or shortly petiolate; leaf blade oblong, elliptic, or ovate, 6--11 × 3--5(--7.5) cm, pubescent or glabrescent. Inflorescence a raceme, sometimes a panicle, 3--8(--17) cm; rachis pubescent. Flowers solitary; pedicel 1.5--4 mm, pubescent. Perianth purplish to white, funnelform; segments connate proximally, forming a tube 3--4 mm, lobes oblong, 3--4 × 1.5--2 mm. Filaments 1--1.5 mm; anthers small. Style 3--4 mm, nearly 2 × as long as ovary; stigma slightly 3-lobed. Fl. May--Jul.
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