雷丁马先蒿 lei ding ma xian hao

Herbs perennial. Stems 30--80 cm tall, unbranched, hirsute. Leaves clasping, linear or linear-lanceolate, 5--8 cm X 5--8 mm, base truncate or cordate, subglabrous; segments ca. 30 pairs, triangular-ovate to ovate, margin incised-dentate. Inflorescences 10--30 cm; bracts leaflike, longer than flowers. Calyx 8--10 mm, glabrous; lobes 5, triangular or triangular-lanceolate, entire. Corolla tube ca. 9 mm, glabrous; galea margin densely long pubescent; lower lip shorter than galea, ca. 1 cm X 8 mm. 2 filaments pubescent, 2 glabrous. Fl. Jul--Aug, fr. Aug--Sep.

* Dry stony hillsides, amidst boulder screes; ca. 4100 m. SC Xizang.