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

14. Ophiorrhiza dulongensis H. S. Lo, Bull. Bot. Res., Harbin. 10(2): 27. 1990.

独龙蛇根草 du long she gen cao

Herbs, weak to procumbent; stems drying purplish brown, pilosulous. Petiole 0.3-1 cm, densely pilosulous or villosulous; leaf blade drying membranous to papery, often green with veins purplish brown abaxially, broadly ovate or ovate, 1-4 × 0.6-2.5 cm, scattered scabrous-strigillose adaxially, abaxially moderately pilose along principal veins, base obtuse to rounded, apex acute; secondary veins 4-6 pairs; stipules persistent, subulate, 4-6 mm, glabrous. Inflorescence fasciculate, 3- or 4-flowered, glabrescent; peduncle ca. 1 cm or slightly longer; bracts linear, ca. 1 mm. Flowers distylous. Calyx puberulent to glabrescent; hypanthium 1-1.5 mm, 5-ribbed; lobes narrowly lanceolate or lanceolate, 1.5-2 mm. Corolla white, funnelform, subglabrous outside; tube 7-7.5 mm, densely villous in throat; lobes triangular-ovate, 2.5-3 mm, dorsally ribbed at least in bud. Capsules unknown. Fl. Jul.

● Evergreen broad-leaved forests; 2300-2400 m. NW Yunnan.

In the protologue and FRPS (71(1): 127. 1999), H. S. Lo detailed the floral forms, noting that their corollas are similar in size and the anthers and stigmas are reciprocally placed near the middle of the corolla tube and in its throat, respectively.


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