尖齿艾纳香 jian chi ai na xiang

Placus oxyodontus (Candolle) Kuntze.

Perennials, with short taproot. Stems usually numerous, prostrate or ascending, 15-30(-40) cm, finely pubescent. Leaves ± sessile, elliptic to obovate, 1-5 × 0.5-1.5 cm, both surfaces sparsely to densely villous and stipitate glandular, base cuneate, margin with a few sharp subspinose teeth, apex acute. Capitula few in terminal and axillary panicles. Involucre ca. 4-seriate; phyllaries lanceolate to linear, 2-6 mm, with long eglandular hairs and some stalked glands. Receptacle glabrous. Corollas yellow, ca. 4 mm; lobes of marginal florets with few eglandular hairs, lobes of central florets with dense minute glandular pubescence and some long eglandular hairs. Anthers white, unribbed, ca. 0.6 mm. Pappus white, 3-4 mm. Fl. Mar-Jul. 2n = 18.

Grasslands, forests; 1200-1700 m. Yunnan [Bhutan, India, Myanmar, Nepal, Pakistan, Thailand, Vietnam].