黄帚橐吾 huang zhou tuo wu

Plants grayish green. Stem erect, 15-80 cm tall, 2-9 mm in diam. at base, glabrous. Basal leaves petiolate; petiole to 21.5 cm, winged or only upper winged; wings entire or dentate, broad or narrow, glabrous; sheath often purplish red; leaf blade ovate, elliptic, or oblong-lanceolate, 3-15 × 1.3-11 cm, glabrous, pinnately or sometimes subparallel veined, base cuneate, gradually attenuate, margin entire, sometimes revolute, apex obtuse or acute. Stem leaves sessile, smaller, ovate or ovate-lanceolate to linear, longer than internodes, rarely distally shorter, often tubular-amplexicaul, apex acute to acuminate. Synflorescence racemose, 4.5-22 cm, clustered or distally clustered, proximally lax; leaflike bracts linear-lanceolate to linear, to 6 cm, smaller distally; peduncles 3-10(-20) mm, white arachnoid-puberulent. Capitula numerous, sometimes solitary or few; supplementary bracts filiform. Involucre turbinate or cupular, 7-10 × 6-9 mm, rarely wider, in solitary capitulum, outside glabrous or densely pilose; phyllaries 10-14, in 2 rows, oblong or narrowly lanceolate, 1.5-5 mm wide, attenuate to caudate, margin broadly or narrowly membranous, apex obtuse to acuminate. Ray florets 5-14, yellow; lamina linear, 8-22 × 1.5-2.5 mm, apex acute; tube ca. 4 mm. Tubular florets numerous, 7-8 mm; tube ca. 3 mm; limb cuneate. Achenes yellowish, cylindric, 3.5-5 mm. Pappus white, as long as tubular corolla. Fl. and fr. Jul-Aug. 2n = 58, 87.

Slopes, stream banks, scrub, swamp meadows, alpine meadows; 2400-4700 m. Gansu, Qinghai, Sichuan, E and NE Xizang, NW Yunnan [Bhutan, India (Sikkim), Nepal].

Lower Taxa

• Ligularia virgaurea var. oligocephala (R. D. Good) S. W. Liu
• Ligularia virgaurea var. pilosa S. W. Liu & T. N. Ho
• Ligularia virgaurea var. virgaurea