不等裂马先蒿 bu deng lie ma xian hao

Herbs annual, 3.5--4.5 cm tall, diffuse, not drying black. Stems slender, many branched, with 1 or 2 internodes and with 2 lines of hairs; branches opposite. Basal leaves withering early. Stem leaves few, opposite; petiole 4--9 mm; leaf blade ovate to oblong-ovate, 2--6 X 1.5--4 mm, abaxially sparsely whitish scurfy, adaxially densely glandular pubescent, pinnatipartite; segments 3 or 4 pairs, broadly ovate, incised-dentate. Inflorescences with only 1 or 2 flower pairs. Pedicel to 6 mm, slender, sparsely pubescent. Calyx ca. 8 mm, whitish long pubescent; lobes 5, unequal. Corolla yellow; tube erect, 9--10 mm; galea falcate apically, margin 2-toothed, ca. 1.4 cm; lower lip shorter than galea, margin ± praemorse, middle lobe ca. 2 X as long as lateral lobes, with ca. 1.5 mm stipitate base. Filaments pubescent basally.

* NW Yunnan.