生活型

herb

形態特徵

• Stems 40–50 cm tall, usually robust, glabrous or pubescent, curved, ascending, branched, winged, wings entire.
• Cauline leaves obovate-oblong, 3–5×1.5–2.2 cm, apex rounded, base narrowed. Clusters of heads globose or ovoid, ca. 8 mm across; peduncle glabrous, winged, bracts slender, acuminate.
• Heads campanulate, 3×2.5 mm. Involucre 3×2.5 mm, bracts subequal, oblanceolate; receptacle naked. Outer florets numerous, corolla tubular, 1.5 mm long; style apex obtuse; central florets ca. 3, corolla 1.5 mm long, 5-dentate; base of anthers entire, filaments dilated, glabrous; style cylindric, short bifid.
• Achenes cylindric, 1 mm long, glandular-punctate, without pappus.

分布

• 台灣 : seaside at the southernmost tip, rare.
• 世界 : Tropical Africa, Asia, Malesia to Australia.

引證標本

PINGTUNG: Chialoshui, Chaw 393.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1073. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)