翅柄橐吾 chi bing tuo wu

Stem erect, to 150 cm tall, 1-1.5 cm in diam. at base, proximally glabrous, distally white arachnoid-puberulent and shortly yellow pilose. Basal leaves petiolate; petiole to 32.5 cm, winged; wings to 5 mm wide; base sheathed, margin entire; leaf blade ovate-cordate, 7-40 cm, proximally 10-17 cm wide, glabrous or abaxially pubescent along veins, pinnately veined, base cordate, margin regularly denticulate, ciliate, apex obtuse; sinus broad and shallow, ca. 1/10 as long as leaf blade, basal lobes orbicular. Middle stem leaves similar, but shortly petiolate; petiole winged; wings denticulate; sheath to 10 cm, upper margin dentate. Distalmost stem leaves bracteal, with enlarged sheathed petiole; leaf blade ovate or reniform, to 6 × 7 cm, margin dentate; pinnately or palmate-pinnately veined. Synflorescence racemose, to 35 cm; leaflike bracts ovate-lanceolate, proximal ones to 7.5 × 2.5 cm, smaller distally, dentate or reniform with sheathed petiole; peduncles slender, proximally to 11 cm, shorter distally, white arachnoid-puberulent. Capitula numerous; supplementary bracts narrowly lanceolate, 1-1.5 cm, longer than involucre, entire or dentate. Involucre broadly campanulate, 8-11 × ca. 10 mm, outside glabrous or white arachnoid-puberulent; phyllaries 10 or 11, in 2 rows, oblong, 4-5 mm wide, margin broadly brown membranous, apex broadly triangular. Ray florets yellow; lamina linear, 30-40 × 2-3 mm, apex acute; tube ca. 5 mm. Tubular florets numerous, ca. 8 mm; tube ca. 4 mm; limb broadly campanulate. Pappus white, as long as tubular corolla. Fl. Jul-Aug.

● Grassy slopes; 2700-3600 m. SW Sichuan, NW Yunnan.