重头马先蒿 chong tou ma xian hao

Herbs annual, 20--60 cm tall. Stems unbranched at base, with 2--4 lines of whitish hairs. Leaves alternate; petiole 0.5--3 cm, sparsely whitish villous; leaf blade ± lanceolate-oblong, 1.5--3 cm, whitish pubescent and scurfy on both surfaces, pinnatipartite; segments 6--9 pairs, oblong, margin double dentate. Inflorescences racemose, densely capitate; bracts leaflike, proximal ones petiolate and shorter than flowers, distal ones ± sessile, whitish scurfy and sparsely pubescent. Pedicel barely 1 mm. Calyx 9--10 mm, sparsely whitish pubescent, 1/2 cleft anteriorly; lobes 5, unequal, ± leaflike, barely 1 mm. Corolla purplish red, 2--2.2 cm; tube erect, bent at a right angle apically, ca. 1.5 cm, sparsely villous and yellow glandular punctate, villous abaxially; beak falcate, ca. 3 mm, bent downward; lower lip yellowish white, shorter than galea, ca. 8 mm, sparsely ciliate, middle lobe obovate, not emarginate. Filaments villous. Fl. Aug, fr. Sep.

* Alpine meadows; 3300--3500 m. NW Yunnan.