生活型

herb

形態特徵

• Dioecious perennial herbs with deep thick roots; 30–80 cm tall; stems erect, sometimes branched.
• Stem leaves few, acid-tasting; basal leaves sagittate with the basal lobes directed backward, 3–11 cm long, 0.5–3.5 cm wide, lobes entire.
• Inflorescence paniculate; staminate flowers with all perianth alike, 2–3 mm long; pistillate flowers with outer perianth segment ca. 1mm long, reflexed, connate at base, with inner perianth segments often pinkish; valves orbicular-cordate, 3–5 mm long, with a small tubercle near the base.
• achenes ellipsoid, dark brown, shining.

分布

• 台灣 : in open waste places and meadows in the northern part of the island.
• 世界 : Native to Eurasia, now widely distributed in the temperate regions of the northern hemisphere.

引證標本

TAIPEI: Pali, Lin 557; Shihmen, Yang 2561. ILAN: Konliaw, Yang 2745. HSINCHU: Hsiangshan, Peng 3126.

引用文獻

• LIU, HO-YIH, Flora of Taiwan, second edition 2: 313. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)