抽茎还阳参 chou jing huan yang shen

Herbs 30-50 cm tall, perennial, rosulate. Taproot woody. Caudex woody, with rather sparse leaf rosette and 1-3 stems. Stems erect, apically sparsely branched and white pubescent, almost leafless. Rosette leaves oblanceolate to elliptic, 5-10 × 2-3 cm, both surfaces pubescent with short glandular hairs, base attenuate into a short winged petiole-like portion, margin denticulate and irregularly sinuate to dentate, apex obtuse to acute. Stem leaves (if present) few, remote, bractlike, narrowly lanceolate, apex acute. Synflorescence laxly corymbose, with few to some capitula. Capitula with 20-30 florets; peduncle wiry, 1-4 cm. Involucre broadly cylindric to narrowly campanulate, 7-10 × 4-6 mm. Phyllaries sparsely pubescent with white partly glandular hairs; outer phyllaries lanceolate to linear-lanceolate, longest ca. 1/2 as long as inner ones, apex acute; inner phyllaries with short blackish rigid subulate hairs on midvein, adaxially glabrous, apex obtuse. Achene dark brown, fusiform, 5-6.5 mm, with 10-12 echinulate ribs, apically strongly attenuate. Pappus white or pale yellowish, 4-5 mm. Fl. and fr. Jul-Aug.

Mountain slopes, moist pastures, fields; 1400-2200 m. Yunnan [N Laos, N Myanmar].