斯氏马先蒿 si shi ma xian hao

Herbs ca. 30(--50) cm tall. Stems single, rigid, freely long branched apically, pubescent. Stem leaves alternate; petiole 1--1.5 cm, slender, sparsely pubescent; leaf blade ovate or ovate-oblong, ca. 2.5 X 1.3 cm, abaxially glabrous, adaxially sparsely pubescent or glabrous, pinnatisect; segments 5--7 pairs, linear-oblong or lanceolate, pinnatifid, dentate. Inflorescences racemose, 2--3(--5) cm, 6- or 7(--10)-flowered; bracts 6--7 X 5--6 mm, often deeply 3-cleft. Pedicel 1--2 mm, slender. Calyx 4--5 mm, 1/2 cleft anteriorly; lobes 3, unequal, ca. 1/2 as long as tube, posterior lobe triangular, entire, lateral pair larger, palmately 3-lobed. Corolla rose, ca. 1 cm; tube erect, ca. 2 X as long as calyx; galea twisted; beak often semicircular, ca. 4 mm; lower lip long ciliate. Filaments pubescent apically. Capsule oblong, ca. 1 cm. Fl. Jul, fr. Aug--Oct.

* Exposed moss-covered rocky slopes; 2200--2900 m. NE Guizhou.