狭花牛奶菜 xia hua niu nai cai

Stephanotis nana P. T. Li; S. yunnanensis H. Léveillé (1915), not Marsdenia yunnanensis (H. Léveillé) Woodson (1934).

Lianas to 4 m, glabrous except for interior of corolla tube at base. Branchlets pale green. Petiole 1-4 cm; leaf blade ovate to ovate-oblong, 2-9.5 × 1.5-5 cm, papery, base deeply cordate to subauriculate, apex acuminate; lateral veins 4 or 5 pairs, flat on both surfaces or slightly elevated abaxially, conspicuously pale abaxially. Inflorescences umbel-like, to 15-flowered, probably pendent; peduncle to 2.5 cm. Pedicel 5-10 mm. Sepals lanceolate, ca. 4.5 × 2 mm, with basal glands. Corolla tubular, to 1.2 cm; tube 6-8 mm, 3-4 mm in diam.; lobes ovate, 3-4 × 1.5-2 mm. Corona lobes linear-lanceolate, longer than or equalling anther appendages, ca. 4 × 1 mm, ± flat. Stigma head short conical to cylindric, sometimes exserted beyond anther appendages. Pollinia ellipsoid. Follicles ellipsoid-lanceolate, ca. 6 cm × 8 mm. Seeds spatulate, ca. 8 × 3 mm; coma 1-5 cm. Fl. Jun, fr. Aug-Nov.

* Open woods; 1500-2600 m. Sichuan, Yunnan.