台湾刘寄奴 tai wan liu ji nu

Senecio formosanus Kitamura, Acta Phytotax. Geobot. 3: 140. 1934 ["formosnus"]; S. nikoensis Miquel var. formosanus Sasaki.

Plants biennial, stoloniferous; stems solitary, erect, green or purple, 9-60 cm tall, simple or branched above, ± pubescent with white crisped hairs. Basal leaves usually shed by anthesis; lower and median stem leaves petiolate; blade abaxially pale green, adaxially green, ovate-oblong, 2.5-15 × 1.5-6 cm, pinnatipartite or subbipinnatipartite with 3-6 lateral lobes on each side, both surfaces puberulent; lateral lobes spreading, ovate-oblong or oblong, usually 3-6-denticulate, apex acute to obtuse; upper stem leaves progressively smaller, shortly petiolate. Capitula few to many, pseudoumbellate, pedunculate, 8-10 mm across ray florets; peduncles 0.5-2.2 cm, slender, minutely puberulent, ebracteolate. Involucres cupuliform, 2-3 × 2-3 mm; phyllaries 13, uniseriate, narrowly oblong, 3-4 × ca. 1 mm, herbaceous, externally glabrous, margin hyaline, ciliate, apex acuminate. Ray florets ca. 13; corolla tube ca. 2.5 mm; lamina oblong, ca. 2 × 1 mm, 4-veined, apically 3-dentate. Disk florets many; corolla yellow, ca. 3.5 mm, with tube ca. 2.5 mm and campanulate limb; lobes 5, ovate-triangular, ca. 0.5 mm, apex acute. Anthers oblong, ca. 0.5 mm, obtuse to rounded at base. Style branches ca. 0.5 mm. Achenes (immature) 1-1.2 mm, puberulent. Pappus persistent, white, 4.5-5 mm. Fl. Aug.

● Mountain slopes; 2300-2900 m. Taiwan (Gaoxiong).