阔柄蟹甲草 kuo bing xie jia cao

Senecio latipes Franchet, J. Bot. (Morot) 8: 356. 1894; Cacalia latipes (Franchet) Handel-Mazzetti; Koyamacalia latipes (Franchet) H. Robinson & Brettell.

Rhizomes robust, ca. 2 cm in diam., with numerous fibrous roots. Stem solitary, erect or curved below, green or purple-tinged below, striate, 50-100 cm tall, sparsely shortly pubescent or subglabrous, simple or synflorescence branched. Leaves few; petiole 3-5 cm, basally expanded into an amplexicaul auricle; blade abaxially pale green, adaxially green, ovate-triangular or broadly triangular, 8-10 × 10-14 cm, stiffly papery, abaxially densely or sparsely arachnoid, or ± glabrescent, rarely shortly pubescent on veins, adaxially adpressed hirsutulous, base truncate or cuneate-decurrent into a broad or narrow wing, margin irregularly serrate, teeth mucronulate, apex acute or acuminate. Upper leaves shortly petiolate, gradually smaller upward, triangular or triangular-lanceolate. Uppermost leaves lanceolate or linear-lanceolate, margin subentire or finely 1- or 2-toothed. Capitula numerous, terminal or upper leaf axils in racemes or compound racemes, lateral, at first spreading, pendulous at anthesis; peduncles 2-3 mm, with 1-3 linear bractlets, arachnoid or subglabrous. Involucres cylindric, 6-8(-10) mm; phyllaries 3, oblong-lanceolate, outside glabrous, margin ciliate, narrowly scarious, apically obtuse or slightly acute. Florets 5 or 6; corolla yellow, 6-7 mm, with ca. 3 mm tube, and campanulate limb; lobes ovate-lanceolate. Anthers exserted from corolla, basally long caudate. Style branches excurved, truncate, papillose. Achenes cylindric, ca. 4 mm, glabrous, ribbed. Pappus white, ca. 6 mm. Fl. Jul-Aug, fr. Sep.

● Understories of Abies forests, forest margins, thickets; 3200-4100 m. SW and W Sichuan, NW Yunnan.