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FOC | Family List | FOC Vol. 10 | Fabaceae | Rhynchosia

10. Rhynchosia yunnanensis Franchet, Pl. Delavay. 185. 1890.

云南鹿藿 yun nan lu huo

Vines, herbaceous or sometimes almost woody, ca. 50 cm. Stems slightly robust, densely villous or tomentose, with dark brown sessile glands. Leaves pinnately 3-foliolate; stipules lan­ceolate, 4-8 mm, usually persistent; petiole 2.5-6 cm; stipels absent; petiolules 1-3 mm, hairy; leaflets papery; terminal leaf­let reniform or oblate, 2-3.7 × 2.5-5.3 cm, densely gray villous, with dark brown glands, basal veins 3, lateral veins 2-4 pairs, reticulate veins visible, base shallowly cordate to almost trun­cate, margin slightly sinuate, slightly reflexed when dried, apex rounded or almost truncate, usually with small mucro; lateral leaflets smaller, slightly oblique. Raceme axillary, rarely soli­tary or branched, 2-5 cm; peduncle 1-3.5 cm, densely hairy; bracts lanceolate, 4-7 mm, persistent. Flowers yellow, 1.4-2 cm; pedicel 2-8 mm. Calyx 5-lobed; lobes lanceolate, longer than tube, lower one longest. Standard subcircular or obovate-circular, 1-1.5 cm, glabrous, base with 2 auricles; wings elliptic to obovate-elliptic, 7-13 mm, auriculate on one side; keel very wide, subobovate, 7-14 mm, without auricle. Ovary densely silky hairy, sessile; ovules 1 or 2; style linear, lower part silky hairy. Legume reddish brown, obovate-orbicular to ellipsoid, 2-2.5 × 0.7-0.8 cm, sparsely pubescent, apex beaked. Seeds dark brown, reniform or orbicular, 4-5 × 5-6 mm. Fl. May-Aug, fr. Jun-Oct.

● River valleys; 1800-2300 m. Yunnan.


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