绒毛马先蒿 rong mao ma xian hao

Herbs annual, to 12 cm tall, tomentose throughout, not drying black. Stems usually 2--6, erect, slender, sometimes short branched apically. Leaves opposite or in whorls of 4, sessile, oblong-ovate to triangular-ovate, 1--1.3 cm X 5--7 mm, densely tomentose on both surfaces; segments 5--9 pairs, crenate-dentate or lobulate. Inflorescences short racemose, to 4 cm; bracts leaflike. Pedicel barely 1--2 mm. Calyx ca. 6 mm, membranous, tomentose; lobes 5, unequal, posterior lobe smallest, dentate. Corolla yellow, 2.2--2.5 cm; tube erect, slightly longer than calyx; galea falcate apically, 1.2--1.3 cm, with 1 marginal tooth on each side; lower lip barely as long as galea, middle lobe nearly as long as lateral lobes, emarginate. Filaments glabrous.

* NW Yunnan.