若尔盖马先蒿 ruo er gai ma xian hao

Herbs perennial, slightly pubescent, drying black. Stems curved, to 25 cm, slender. Leaves pseudo-opposite, distal ones often alternate; petiole to 2 cm; leaf blade linear-oblong, 4--6 cm, abaxially glabrous, adaxially pubescent, pinnatisect; segments oblique-ovate, very widely spaced, incised-dentate. Pedicel to 5--10 mm. Calyx cylindric, 1--1.5 cm, shallowly cleft anteriorly; lobes 5, equal, slightly enlarged and serrate apically. Corolla purple-red, 6--9 cm; tube 5--8 cm, villous; galea bent at a right angle apically; beak evenly deflexed, ± curved, ca. 1 cm, slender; lower lip 1.6--1.8 X 1.8--2.2 cm, ciliate, middle lobe smaller than lateral ones, rounded. 2 filaments pubescent, 2 glabrous. Fl. Jun, fr. Jul--Aug.

* Tsuga chinensis forests; 2700--2800 m. N Sichuan.