矢叶橐吾 shi ye tuo wu

Senecio fargesii Franchet, Bull. Soc. Bot. France 39: 300. 1893; Senecillis fargesii (Franchet) Kitamura.

Stem erect, 24-70 cm tall, slender, 1.5-3 mm in diam. at base, glabrous. Basal leaves petiolate; petiole to 30 cm, slender, glabrous, base sheathed; leaf blade ovate- or cordate-hastate, 3.5-8 × 5-6 cm, glabrous, margin denticulate, apex rounded, mucronate; sinus ca. 1/3 as long as leaf blade, narrow; basal lobes divergent, coarsely 2- or 3-dentate on each outer margin. Middle stem leaves similar but smaller, shortly petiolate, sheath amplexicaul. Synflorescence racemose, 4.5-9 cm; leaflike and supplementary bracts linear; peduncles less than 3 mm, shortly pilose. Capitula ca. 11. Involucre narrowly cylindric, 6-10 × 2-3 mm, outside glabrous; phyllaries 4 or 5, in 2 rows, oblong, apex triangular. Ray florets 2, yellow; lamina linear, ca. 15 × 1 mm, apex rounded; tube ca. 7 mm. Tubular florets ca. 3, 9-10 mm; tube ca. 4 mm. Achenes dark brown, cylindric, ca. 6 mm. Pappus white, rarely blackish gray, ca. 3 mm, shorter than tube of tubular corolla. Fl. and fr. Jul-Sep.

● Forest understories, grassy slopes, at base of rocks; 1400-2700 m. Chongqing, W Hubei, S Shaanxi, E Sichuan.