Erect, perennial rhizomatous herb. Stem 32-44 cm tall, usually simple basally, branched avove, glabrous. Basal and lower cauline leaves withered at anthesis; middle and upper cauline leaves many, base attenuate into petiole, 1-2 cm long, glabrous on both surfaces, ovate, 11-13 cm long, 3-5.5 cm wide, deeply bipinnatipartite to tripinnatipartite, irregularly incised, segments spreading, lanceolate to narrowly oblong or linear, papery; upper cauline leaves gradually smaller, linear-lanceolate to linear, remotely dentate, subsessile. Heads radiate, many terminal on branches, forming a corymb; peduncles 3-7 cm long, slender, nearly glabrous to sparingly puberulou, with 1-3 linear bracteoles; bracteoles 2-3 mm long, subglabrous or sparsely pubescent. Involucre subcylindric, ca. 8-10 mm long, 4-6 mm across, calyculate; bracts 2-seriate, ca. 13, herbaceous, linear, 0.5-1 mm wide, with narrow scarious margins, apex acute to subobtuse, puberulous, otherwise glabrous. Ray florets 5 (-6), tube yellow, ca. 8.5 mm long, rays yellow, 9-14 mm long, ca. 3.5 mm broad, 3-denticulate at apex, 4-veined; disc florets ca. 14-15, corolla yellow, 7-8mm long, tube 4-5 mm long, limb infundibuliform, lobes oblong-lanceolate, 1-1.5 mm long, acute, papillose at apex. Anthers ca. 2.5 mm long, shortly obtusely auriculate at the base, apical appendages ovate-lanceolate. Achenes cylindrical, 2-3 mm long, sparsely hirtellous on ribs. Flowering Aug-Oct.
KAOHSIUNG: Taoyuan, Chung s. n. 1994 (HAST, NCUF, TAIF); Kuanshan, Chung 101 (TAIF), Wu & Huang 5417 (TAI), Liou et al. 367 (TAIF).
Endemic and apparently rare in Taiwan; presently known only along semishaded trails in Tsuga-Abies forests and in Yushania bamboo grasslands near the mountain ridge of Kuanshan, at (2,500-) 3, 000-3,300m elevation.
is a distinct member of sect.
Chung, S.- W. & C.-I Peng. 2002. Senecio kuanshanensis (Asteraceae), a new species from southern Taiwan. Bot. Bull. Acad. Sin. 43(2): 155-159.
