长毛细辛 chang mao xi xin

Geotaenium pulchellum (Hemsley) F. Maekawa, comb. inval.; Asarum caulescens var. setchuenense Franchet.

Herbs densely covered with long white hairs, hairs turning black when dried. Rhizomes horizontal, 2-7 mm in diam., internodes 3.5-7.5 cm. Leaves paired; petiole 10-20 cm, densely white villous; leaf blade uniformly colored, ovate-cordate or broadly ovate, 5-8 × 5-9.5 cm, both surfaces densely white villous, base cordate, lateral lobes 1-2.5 × 2-3 cm, apex acute or acuminate; cataphylls ovate, 1.5-2 × 1 cm. Peduncle pendent, 1-2.5 cm. Calyx abaxially purple, adaxially white, urceolate-cylindric, 1-2 × 0.8-1.5 cm; sepals free beyond attachment to ovary, abaxially long villous; pseudotube urceolate, 0.8-1.2 × 0.8-1.4 cm; lobes reflexed, triangular, 0.4-0.8 × 0.6-1 cm, apex obtuse or acute. Stamens 9-12; filaments longer than anthers; connectives extended beyond anthers, ligulate. Ovary inferior. Styles connate, apex 6-cleft; stigmas terminal. Fl. Apr-May.

* Mixed forests; 700-1700 m. Anhui, Guizhou, Hubei, Jiangxi, Sichuan, NE Yunnan.

This species is used medicinally.