生活型

herb

形態特徵

• Glabrous annuals; stems branched, erect or ascending, to 30 cm or more tall.
• Leaves petiolate, ovate to ovate-lanceolate, 2–4 cm long, 1–2.5 cm broad, apex acute, base cuneate, 3-nerved, entire, coarsely or crenately serrate; petiole 1–2 cm long.
• Peduncle 2.5–16 cm long, sparsely pilose. Heads discoid, solitary, terminal or axillary, 8.4–12.5 mm tall, 6.9–10 mm in diam. Receptacle 5–8 mm tall, 1.1–3 mm in diam., apex acuminate. Involucral bracts 9–12, in 2-series, ovate-lanceolate, ca. 6 mm long, herbaceous, glabrous. Disc florets 90–200; tubular, minute, 4- or 5-lobed.
• Achenes obovoid, 3-angled, ca. 3 mm long, apex slightly depressed, margins scabrid. Pappus of 2 subequal bristles, longer one 0.5–1.1 mm long, shorter one 0.4–0.9 mm long.

分布

• 台灣 : in low open places.
• 世界 : south, southeast Asia and south China

引證標本

TAIPEI: Wulai, Sasaki s. n. 1932. NANTOU: Lienhuachih, Sasaki s. n. 1925. TAINAN: Paiho, Tatungshan, Yen 6. KAOHSIUNG: Takangshan, Monitani 2372. TAITUNG: Lanyu Is., Peng 5278, 6588.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 814. 1998.  (Fl. Taiwan 2nd edit.)