花脸细辛 hua lian xi xin

Heterotropa splendens F. Maekawa, J. Jap. Bot. 57: 261. 1982; Asarum chingchengense C. Y. Cheng & C. S. Yang.

Herbs. Rhizomes horizontal, 2-3 mm in diam., internodes ca. 1.5 cm. Leaves solitary; petiole 8-16 cm, glabrous; leaf blade adaxially often with white blotches, ovate-cordate or nearly hastate, 6-10 × 5-9 cm, abaxial surface glabrous, adaxial surface sparsely pubescent along midvein, base auriculate to subcordate, lateral lobes 2-3.5 × 2-3.5 cm, apex acute; cataphylls oblong, ca. 2 × 1.5 cm. Peduncle recurved, ca. 1 cm. Calyx purplish green, campanulate, 2-3 × 2.5-3 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube broadly cupular to subglobose, ca. 1.4 × 2 cm, slightly constricted at throat, adaxially tessellate, orifice ring narrow, inconspicuous; lobes broadly ovate, ca. 2 × 2.5 cm, base with semicircular corrugate-papillate area. Stamens 12; filaments much shorter than anthers; connectives slightly extended beyond anthers, rounded. Ovary superior. Styles free, apex 2-forked or -notched; stigmas lateral. Fl. Apr-May.

* Thickets, grasslands, moist mountain slopes; 800-1300 m. Guizhou, Hubei, Sichuan, NE Yunnan.