生活型

herb

形態特徵

• Herbs from stout rhizomes. Stems grayish-brown woolly or nearly glabrous.
• Radical leaves thick, reniform, 4–15×6–30 cm, margins mucronulate-dentate or subentire; petiole not winged, 10–38 cm long, dilated at base, slightly tomentose on both surfaces, becoming glabrous. Scapes 30–75 cm long, bracteate.
• Heads 4–6 cm long, in loose corymbs, peduncle 1.5–7 cm long. Involucre broadly tubular, in 1 series, 12–15×12–20 mm, bracteoles narrowly lanceolate, 4–7 mm long, involucral bracts equal, oblong, cuspidate, minutely puberulous. Ray florets in one series; corolla yellow, 3–4×0.5–0.6 cm. Disc florets: corolla yellow, 11–12 mm long, lobes 1.5 mm long.
• Achenes cylindric, 5–6.5 mm long, hairy. Pappus 8–11 mm long, dark brown, bristles unequal.

分布

• 台灣 : confined to Lanyu and Lutao islands.
• 世界 : China, Japan and Korea.

引證標本

TAITUNG: Lanyu Is., Peng 10641; Lutao Is., Sata s. n. 1932.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 964. 1998.  (Fl. Taiwan 2nd edit.)