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FOC | Family List | FOC Vol. 19 | Rubiaceae | Ophiorrhiza

41. Ophiorrhiza medogensis H. Li, Acta Phytotax. Sin. 18: 116. 1980.

长萼蛇根草 chang e she gen cao

Herbs or subshrubs, ascending, to 60 cm tall; stems densely brown villous with multicellular trichomes. Leaves in unequal pairs; petiole 0.5-1.5(-3.5) cm, densely villous; blade drying thinly papery, pallid green on both surfaces or reddened abaxially, lanceolate, oblong-lanceolate, or subovate, 6-14 × 2.2-5.5 cm, adaxially glabrous or sparsely hispid, abaxially densely villous along principal veins, base rounded or subcordate, usually inequilateral, margins subentire or undulate, ciliate, apex abruptly acuminate; secondary veins 8-16 pairs; stipules generally persistent, with 2 or 3 subulate to filiform lobes ca. 1 cm, ciliate. Inflorescences congested-cymose, many flowered, densely villous; peduncles shorter than 1 cm; axes short, helicoid; bracts filiform or subulate, 1-2 cm, ciliate. Flowers with biology unknown, subsessile. Calyx densely villous; hypanthium subglobose, ca. 2 mm; lobes filiform, 7-8 mm, ciliate. Corolla white, tubular-funnelform, puberulent outside; tube ca. 18 mm, in throat notably expanded, inside villous above middle; lobes oblong-ovate, ca. 4 mm. Capsules obovate, ca. 5 × 10 mm. Fl. Sep.

● Broad-leaved forests on mountain slopes; ca. 1700 m. Xizang (Mêdog).


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