南川马先蒿 nan chuan ma xian hao

Herbs perennial, 15--25 cm tall. Roots fleshy. Stems erect, 4--7 cm, many branched; branches ascending or procumbent basally, densely white villous. Leaves alternate or sometimes ± opposite at branches; petiole to 5 cm, but barely 1.5--2 cm on branches, slightly villous; leaf blade oblong-lanceolate to ovate-oblong, 6--11 X 2.5--5 cm, slightly pubescent, pinnatisect; segments 7--12 pairs, ovate to lanceolate, pinnatifid, incised-dentate. Flowers widely spaced. Pedicel to 3.5 mm. Calyx ca. 1 cm, slightly cleft anteriorly, densely villous along 5 veins; lobes 5, ± equal, leaflike. Corolla red, ca. 3 cm; tube erect, ca. 2.5 cm, slender, pubescent; galea glabrous, ± bent at a right angle apically; beak straight, barely 3--4 mm; lower lip longer than galea, ca. 1.2 X 1.5 cm. 2 filaments pubescent, 2 glabrous. Fl. May--Jun, fr. Jul--Aug.

* Margins of bamboo groves; 2100--2300 m. SE Sichuan.