赤茎羊耳菊 chi jing yang er ju

Amphirhapis rubricaulis Candolle, Prodr. 5: 343. 1836; Inula rubricaulis (Candolle) Bentham & J. D. Hooker.

Subshrubs, 1-2 m tall. Stems sparsely gray tomentose at first, later reddish, glabrous. Leaves sessile, elliptic-lanceolate, 6-19 × 1-4 cm, sparsely pubescent on both surfaces, base cuneate, margin serrulate, apex acuminate. Capitula radiate, 2-6 in small lateral racemes or corymbs. Involucre 5- or 6-seriate; phyllaries acuminate, outer ones spreading, lanceolate, inner ones linear-lanceolate, to 8-9 mm. Ray florets few; corolla tube ca. 5 mm; lamina 6-8.5 × 1.7-2 mm. Disk florets ca. 7 mm in diam.; corollas 6-7 mm. Achenes oblong, ca. 2.5 mm, sericeous. Pappus white, 5-6 mm, of ca. 20 bristles. Fl. May-Aug, fr. Jul-Nov. 2n = 20.

Slopes in valleys; 1000-2000 m. Yunnan [Bhutan, NE India, Myanmar, Nepal, Thailand, Vietnam].