少花马先蒿 shao hua ma xian hao

Herbs perennial, 40--50 cm tall. Stems several, erect or ascending, many branched, glabrous. Basal leaves withering early. Stem leaves numerous, to 8--10, alternate; petiole to 3.5 cm, glabrous; leaf blade ovate-oblong to oblong-lanceolate, to 10 X 3.5 cm, glabrous on both surfaces, abaxially sparsely whitish scurfy, pinnatipartite to pinnatisect; segments to 14 pairs, ovate-lanceolate to ± oblong, pinnatifid, spinescent-double dentate. Inflorescences short racemose; bracts leaflike. Calyx ca. 8 mm; 1/2 cleft anteriorly; tube ca. 6 mm; lobes 3, unequal, posterior lobe smallest, lateral pair flabellate. Corolla yellow; tube erect, ca. as long as calyx; galea ± bent at a right angle apically, not crested, with 1 triangular reflexed marginal tooth on one side; lower lip ca. 6 X 7 mm, ciliate. Filaments glabrous. Fl. Jul, fr. Aug.

* NW Yunnan.