五月瓜藤(原亚种) wu yue gua teng (yuan ya zhong)

Holboellia acuminata Lindley; H. angustifolia Diels (1900), not Wallich (1824); H. angustifolia var. angustissima Diels; H. angustifolia var. minima Réaubourg; H. fargesii Réaubourg; H. latifolia Franchet (1885), not Wallich (1824); H. latifolia Wallich var.acuminata (Lindley) Gagnepain; H. latifolia Wallich var. angustifolia (Wallich) J. D. Hooker & Thomson; H. latifolia var. bracteata Gagnepain; H. marmorata Handel-Mazzetti; Stauntonia longipes Hemsley.

Leaflets 5--7, ovate-elliptic, 4.5--13 cm, more than 2 × as long as wide, base cuneate, margin entire, apex acute. Fl. Apr--May, fr. Sep--Oct.

Edge of forests, hillsides, by streams. Anhui, Guangdong, Guangxi, Guizhou, Hubei, Shaanxi, Sichuan, Yunnan [Bhutan, N India, Myanmar, Nepal, Sikkim].