灰色马先蒿 hui se ma xian hao

Herbs perennial, 10--28 cm tall. Stems grayish brown pubescent, striate. Leaves short petiolate to sessile or ± clasping; leaf blade narrowly lanceolate, to 4.5 X 1 cm; leaves dense and small basally, abaxially glabrous, adaxially pubescent, crenate-pinnatilobate to pinnatipartite; segments double dentate. Inflorescences capitate to laxly racemose, to 14 cm, with more than 20 flowers; bracts ovate-oblong, densely tomentose. Calyx to 1 cm, pubescent, 5-lobed. Corolla whitish rose; tube ca. 1.2 cm, glabrous; galea glabrous except for long bearded margin, with purple hairs; lower lip deeply 3-parted nearly to base. Filaments glabrous. Capsule ca. 1.3 cm X 5 mm. Fl. Jul, fr. Jul--Aug.

* Grassy slopes; 4000--4400 m. W Sichuan.