蕨叶马先蒿 jue ye ma xian hao

Herbs perennial, to 40--60 cm tall, flexuously ascending, drying black. Stems single, striate, glabrous. Leaves alternate; petiole to 5--9 cm, glabrous; leaf blade oblong-ovate to broadly ovate, to 15--28 cm, abaxially subglabrous along midvein, adaxially sparsely glandular pubescent, densely ciliolate along midvein, pinnatipartite to pinnatisect; segments 5--9 pairs, ovate-oblong to narrowly lanceolate, pinnatifid, margin double dentate. Inflorescences, spicate, 4.5--7 cm; bracts leaflike basally. Pedicel short. Calyx glabrous; tube 5--6 mm; lobes 5, equal, triangular, entire. Corolla 2--2.8 cm; tube erect, glabrous; galea erect, slightly pubescent along margin, rounded in front, apex bent downward; lower lip ciliate, middle lobe emarginate. 2 filaments pubescent, 2 glabrous. Capsule compressed, lanceolate, ca. 1.3 cm X 4 mm, apex acute. Fl. and fr. Sep--Oct.

* Forests; 800--1600 m. Sichuan.