生活型

herb

形態特徵

• Decumbent to ascending herbs, to 100 cm tall, throughout loosely to moderately stellate-pubescent; stems much branched, angled, arms with recurved prickles.
• Leaves hastate, 2–7 cm long, 2–5.5 cm wide, apex acute to acuminate, base truncate to weakly hastate, both surfaces strigose, middle lobe broadly elliptic, basal lobes smaller than the middle lobe and with apex acute; petioles 1–4 cm long; ocreae tubular, green, strigose, upper margins often expanded, ciliate.
• Inflorescences 1–3-flowered fascicles in head-like panicles, terminal or in axils of upper leaves; peduncles glandular pubescent, 1–6 cm long; bracts lanceolate to elliptic, pilose, apex acuminate, upper margins ciliate. Flowers whitish with pink tinge at the perianth-segment tip; pedicels included; perianth segments 5, elliptic, 3–4 mm long, apex obtuse; stamens 8; styles 2–3-cleft, included; nectaries present.
• Achenes greenish-brown to dark brown, trigonous or biconvex, smooth, shining, 2–2.5 mm long.

分布

• 台灣 : at altitudes of 1,500–2,500 m, in partially shady, wet places, stream bank thickets, and along roadsides.
• 世界 : Russian Far East, China (S, SW, C, N, E & NE), Korea, Japan and the Ryukyus.

引證標本

ILAN: Nanshan, Hsu 5807; Chihtuan, Kuo 8738. NANTOU: Fonghuangshan, Kuo 10342. TAICHUNG: Shunkuan, Huang & Hsieh 7321. CHIAYI: Alishan, Kuo 80299. TAITUNG: Chihpenwunchien, Hsu & Kao 3293.

參考文獻

• LIU, HO-YIH, Flora of Taiwan, second edition 2: 311. 1996.  (Fl. Taiwan 2nd edit.)