法氏马先蒿 fa shi ma xian hao

Herbs annual or biennial, to 20--40 cm tall, subglabrous, not drying black. Petiole of basal leaves 4--7 cm; leaf blade ovate-oblong to elliptic-oblong, 5--6 X 2.5--3.5 cm, membranous, pinnatisect to pinnatipartite; segments 5--8 pairs, ovate-oblong, incised-double dentate, abaxially sparsely white pubescent along veins, adaxially glabrous. Stem leaves often only 2 or absent, ± opposite. Inflorescences capitate, 5- or 6-flowered; bracts leaflike. Calyx ca. 1 cm, slightly cleft anteriorly; lobes 5, ± equal, serrate. Corolla white, ca. 2 cm; tube slender, ca. 2 X as long as calyx; galea crescent-shaped apically; beak pointing forward, perpendicular to basal part of galea, ± straight, curved only apically; lower lip slightly shorter than galea, ciliate. Filaments villous. Fl. Jun--Jul, fr. Aug--Sep.

* Pinus and Abies forests, grassy slopes; 1400--1800 m. S Gansu, W Hubei, Hunan, E Sichuan.