台湾橐吾 tai wan tuo wu

Senecillis kojimae (Kitamura) Kitamura.

Stem erect, ca. 30 cm tall, slender, ca. 2.5 mm in diam. at base, proximally glabrous, distalmost and synflorescence sparsely white arachnoid-puberulent. Basal leaves petiolate; petiole to 10 cm, base sheathed; leaf blade abaxially pale green, reniform, 2.3-3 × ca. 3.5 cm, glabrous, margin regularly denticulate, apex rounded; sinus broad or narrow. Middle stem leaves 1 or 2, reniform; petiolar base enlarged, sheath amplexicaul. Synflorescence racemose; leaflike bracts lanceolate, 8-12 mm; peduncles to 9 mm. Capitula ca. 11. Involucre cylindric, ca. 10 × 4 mm; phyllaries 5, in 2 rows, linear, apex pubescent. Ray florets 2 or 3, yellow; lamina ca. 13 × 1.5 mm, apex 3-divided; tube ca. 7 mm. Tubular florets ca. 6, ca. 1.2 cm. Achenes (immature) truncate at apex, narrowed at base. Pappus ca. 4 mm. Fl. and fr. Aug-Oct.

● Alpine areas; ca. 3000 m. Taiwan (Xinzhu).