白氏马先蒿 bai shi ma xian hao

Pedicularis tristis Linnaeus var. macrantha Maximowicz.

Herbs perennial, to 35 cm tall. Stems erect, pubescent, longitudinally striate. Leaves mostly on stem, lanceolate-oblong, to 8 X 2 cm, sparsely pubescent, pinnatifid; segments 10--15 pairs, dentate. Bracts leaflike, longer than calyx, shorter than flowers. Calyx pubescent; tube to 1.5 cm; lobes 5, ± equal, lanceolate-oblong, distinctly serrate. Corolla yellow, 4--4.5 cm, pubescent; tube ca. as long as galea; galea 6--8 mm wide, margin densely ciliate, apex acute; lower lip ca. as long as galea, lobes ± equal. Filaments sparsely pubescent. Fl. Jul--Aug, fr. Aug--Sep.

* Alpine meadows, Picea forests; 2800--3000 m. Gansu, W Sichuan.