屏边双蝴蝶 ping bian shuang hu die

Stems spirally twisted, twining, terete, striate. Petiole 0.5-1 cm, slender; leaf blade lanceolate, 3-8 × 0.7-3 cm, base rounded to truncate and slightly oblique, margin crenulate, apex acuminate, veins 3. Inflorescences 1flowered or cymes. Pedicel 0.5-1.5 cm; bractlets lanceolate. Calyx narrowly campanulate; tube 1-1.2 cm, wingless; lobes linear, 1-1.4 cm, apex acuminate. Corolla purple, narrowly campanulate, ca. 4 cm; lobes triangular, 4-5 mm, apex acute; plicae semiorbicular, 1.5-2 mm, margin erose. Filaments linear-subulate, 1.5-2.2 cm; anthers ellipsoid, ca. 1.2 mm. Disc ca. 1 mm. Style linear, ca. 1.5 cm; stigma lobes linear. Berries ellipsoid, ca. 2 cm, included in corolla; gynophore ca. 1.5 cm. Seeds dark purple, ellipsoid to ovoid, ca. 3 mm, triquetrous, narrowly winged. Fl. and fr. Sep-Dec.

* Scattered forests, valleys; 1400-2700 m. SE Yunnan