丽江橐吾 li jiang tuo wu

Stem erect, 36-45 cm tall, 5-10 mm in diam. at base, proximally glabrous, distally white arachnoid-puberulent and shortly pilose. Basal leaves petiolate; petiole to 18 cm, glabrous; wings 2-4 mm wide; sheath ca. 5.5 cm; leaf blade ovate-cordate, 13-15 × 10-11 cm, glabrous, pinnately veined, lateral veins 8-10 pairs, base shallowly cordate or rarely subtruncate, margin regularly denticulate, apex acute or obtuse. Proximal stem leaves 2 or 3, similar to basal leaves but smaller; petiole winged; sheath ovate, subopposite, 4-8 × to 2 cm, mouth of sheath spreading toward outside, forming an oblique petiole. Middle to distal stem leaves erect, ovate-lanceolate, to 7 × 1 cm, smaller distally, base semiamplexicaul or not, margin denticulate, apex acute. Synflorescence racemose, 10-12 cm, clustered initially; leaflike bracts ovate-lanceolate or narrowly lanceolate, to 3 cm × 3-6 mm, denticulate, narrowed at base into a short petiole; peduncles ca. 5 mm, slender. Capitula numerous; supplementary bracts linear-lanceolate, 8-10 mm. Involucre cupular, 5-8 mm, mouth ca. 1 cm in diam., outside glabrous; phyllaries in 2 rows, broadly obovate or elliptic, 3-4 mm wide, apex brown, broadly triangular, acute and recurved mucronate; inner phyllaries broadly membranous at margin. Ray florets 5-10, yellow; lamina oblong, 1.3-1.5 cm × 2-4.5 mm, apex obtuse; tube ca. 3 mm. Tubular florets numerous, 6-7 mm; tube ca. 4 mm. Achenes cylindric, ca. 4 mm. Pappus white, as long as tubular corolla. Fl. and fr. Aug-Sep.

● Stream banks, grassy slopes; 2600-3300 m. NW Yunnan.