Rhizome ± branched, tuberous terete, 1--1.5 cm thick. Stem arching, 40--60 cm, glabrous. Leaves many, opposite; petiole short, ca. 5 mm; leaf blade usually shiny, ovate-oblong to ovate-lanceolate, 6--11 × 1.5--3.5 cm, subleathery, with distinct cross veins, apex acuminate. Inflorescences 3--5-flowered; peduncle pendulous, 5--8 mm; bracts small, membranous, caducous. Pedicel 5--12 mm. Perianth white or pale yellowish green, sometimes spotted with lilac, cylindric, slightly constricted near mouth, 1.1--1.3 cm; lobes ca. 2.5 mm. Filaments filiform, 3.5--4 × ca. 0.25 mm, papillose, sometimes smooth proximally; anthers ca. 4 mm. Ovary ca. 5 mm. Style ca. 6 mm. Fl. May. 2 n = (24), 30*, (36).
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A herb. The rhizome is branched and it forms tubers. It grows 60 cm high. The stems arch over. The leaves are leathery and deep green. They are 6-11 cm long by 2-4 cm wide. There are 3-5 flowers in a group. The flowers are greenish.
It is a temperate plant. It grows on rocks in rain forests between 1,800-2,200 m above sea level in Tibet. Melbourne Botanical gardens.
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