艾叶火绒草 ai ye huo rong cao

Gnaphalium artemisiifolium H. Léveillé, Repert. Spec. Nov. Regni Veg. 11: 492. Jan 1913.

Herbs, perennial. Stems several, woody, erect, not branched, 25-60(-100) cm tall, sparsely covered with brown decayed leaves in lower part, entire stem glandular pilose, upper part usually covered with arachnoid hairs. Cauline leaves 19-35, oblong-lanceolate, 20-50 × 5-8 mm, abaxially pale white and densely tomentose, adaxially green and covered with sparse short glandular hairs, base narrowed, apex acute with a short mucro. Capitula usually 6-12 mm in diam., in dense corymbs at ends of stems or in sparsely compound corymbs; bracteal leaves 11-13, lanceolate, 10-30 × 2.5-6 mm, densely white tomentose. Involucre subglobose, 4-6 mm wide; phyllaries 3-seriate, abaxially densely tomentose, apex acute, glabrous and naked. Marginal florets female; corolla capillary, 3-4 mm; achenes ca. 1 mm, ± papillose. Disk florets bisexual; corolla subtubular, 3-4 mm, sterile. Pappus white, ca. 3 mm, serrulate. Fl. Aug-Sep, fr. Sep-Oct.

● Grasslands, forest margins, riverbanks; 2100-3200 m. Sichuan, N Yunnan.