薄核藤 bao he teng

Natsiatum tonkinense Gagnepain.

Young branches yellow-brown strigose; old branches con spicuously lenticellate. Petiole 3.5-7.5 cm, slender, yellow- brown crispate pubescent; leaf blade cordate-ovate, 8-12 × 5-8 cm, membranous, sparsely hirsute, lateral veins 3-5 pairs, like midvein prominent abaxially, concave adaxially, tertiary veins subparallel, reticulate veins very conspicuous abaxially, base cordate, margin minutely mucronate by excurrent veins, apex acute. Flowers yellow-green; pedicel ca. as long as flowers, slender, hirsute. Sepals lanceolate, ca. 1 mm, valvate, outside hairy. Petals narrowly lanceolate, ca. 3 mm, outside hairy. Drupe yellow-green, becoming black with age, ca. 1.5 × 1 cm. Fl. unknown, fr. Aug.

Evergreen broad-leaved forests on limestone mountains; ca. 2400 m. W Yunnan (Lushui) [Bangladesh, Bhutan, N India, NE Laos, S Myanmar, Nepal, Sri Lanka, NE Thailand, N Vietnam].