须毛马先蒿 xu mao ma xian hao

Herbs perennial, drying black. Stems to 40 cm tall, erect, unbranched, densely grayish brown pubescent, with few ovate scales at base. Leaves ± clasping, sessile, linear-lanceolate, 3.5--4.5 cm X 5--6 mm, base auriculate, margin incised-double dentate, apex acute. Inflorescences racemose, to 15 cm, dense; bracts leaflike. Pedicel 1--1.5 mm. Calyx oblong-ovate, to 1.2 cm; lobes 5, triangular, ± entire. Corolla yellow; tube ca. 1.1 cm; galea conspicuously navicular, ca. 1.5 cm X 4.5 mm, margin densely long pubescent; lower lip ca. 1.1 X 1.2 cm, lobes ± rounded, denticulate. 2 filaments pubescent, 2 completely glabrous including extreme apex. Ovary ca. 4 mm.

* NW Yunnan.