黑紫橐吾 hei zi tuo wu

Senecio atroviolaceus Franchet, Bull. Soc. Bot. France 39: 303. 1893; Cremanthodium atroviolaceum (Franchet) R. D. Good; Senecillis atroviolacea (Franchet) Kitamura; Senecio oreotrephes W. W. Smith.

Stem erect, 25-60 cm tall, 3-5 mm in diam. at base, densely long blackish purple pilose, intermixed white arachnoid-puberulent in synflorescence. Basal leaves petiolate; petiole 7-15 cm, densely long blackish purple pilose, base narrowly sheathing; leaf blade ovate-cordate, 5-9 × 3.5-7 cm, abaxially shortly pilose, densely so along veins, adaxially glabrescent, pinnately veined, lateral veins 6-10 pairs, abaxially with conspicuous slender reticulate veins, base cordate, margin minutely denticulate, long blackish purple pilose between teeth, apex obtuse; sinus 1/4-1/3 as long as blade, narrow, basal lobes oblong, convergent. Middle stem leaves often solitary, similar but smaller, shortly petiolate; sheath enlarged, 3-4 × ca. 1.5 cm, densely long blackish purple pilose. Capitula 4-10, in corymb; leaflike and supplementary bracts subulate, shorter; peduncles 3-15 mm, densely long blackish purple pilose. Involucre narrowly campanulate or turbinate, 6-10 mm, mouth to 1 cm in diam., outside long blackish purple pilose; phyllaries 10-12, in 2 rows; outer phyllaries lanceolate and narrow; inner phyllaries oblong and ca. 2.5 mm wide, margin narrowly brown membranous, apex acute. Florets numerous, all tubular, yellow, 6-7 mm; tube ca. 3 mm. Achenes pale brown, cylindric, ca. 5 mm. Pappus yellowish, as long as tubular corolla. Fl. and fr. Aug-Dec.

● Forest understories, grasslands; 3000-4000 m. SW Sichuan, NW Yunnan.