生活型

herb

形態特徵

• Ascending herbs, to 100 cm tall; stems branched, glabrous; nodes enlarged.
• Leaves subsessile, lanceolate to narrowly elliptic, 8–14 cm long, 1.2–1.7 cm wide, apex acuminate, base cuneate to obtuse, both surfaces glabrous to loosely sericeous to strigose; ocreae tubular, 1.2–1.5 cm long, apex truncate, strigose, upper marginal cilia shorter than ocrea.
• Inflorescences 4–7-flowered fascicles in spike-like racemes, terminal or in axils of upper leaves, densely flowered, interrupted below, 3–5 cm long; peduncles glabrous, 1.5–3 mm long; bracts funnelform, glabrous, upper margins ciliate. Flowers white; pedicels included or slightly exserted; perianth segments 5 or 6, elliptic, ca. 2 mm long, obtuse; stamens 7–9; styles 3-cleft, included; nectaries present.
• Achenes dark brown to black, trigonous, smooth, shining, ca. 2 mm long.

分布

• 台灣 : wet grassy places in lowlands.
• 世界 : China (S, SW, C, E & Xizang), Korea, Japan and the Ryukyus.

引證標本

HUALIEN: Chen 7369.

參考文獻

• LIU, HO-YIH, Flora of Taiwan, second edition 2: 302. 1996.  (Fl. Taiwan 2nd edit.)