Polygonum praetermissum

細葉雀翹

Polygonum praetermissum Hook. f.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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Hook. f., The Flora of British India 5: 47. 1886. (Fl. Brit. Ind.)

Hsu, Polyg. Taiwan 25. fig. 27. 1967.

Persicaria hastatoauriculata (Makino ex Nakai) Nakai

Sasaki, List of plants of Formosa 169. 1928. (List Pl. Formos. (Sasaki), 台灣植物名彙)
Persicaria auriculata (Makino) Masam.

Masam., Memoirs of the Faculty of Science and Agriculture Taihoku Imperial University 11(4): 173. 1934. (Mem. Fac. Sci. Agr. Taihoku Imp. Univ., 台北帝國大學理農學部紀要)

herb

Annual decumbent or ascending herbs, 15–80 cm tall; stems branched, angled, armed with recurved prickles; nodes enlarged.
Leaves lanceolate, 2.5–8 cm long, 0.5–1.5 cm wide, apex acute to acuminate, base cuneate to hastate or sagittate, both surfaces glabrous, beneath veins prickly; petioles 0.5–1 cm long; ocreae tubular, 1–1.5 cm long, apex oblique, strigose at veins, upper margins ciliate.
Inflorescences 2–4-flowered fascicles in spike-like panicles, terminal or axillary, interrupted, 2–5 cm long; peduncles glandular pubescent, 1–4 cm long; bracts oblique funnel-form, glabrous, upper margins ciliate. Flowers white to pink; pedicels slightly exserted; perianth segments 4, elliptic, 2–3 mm long, apex obtuse; stamens 5; styles 3-cleft, included; nectaries present.
Achenes dark brown, trigonous, rugose, not shining, 2–3 mm long.

台灣 : at low altitudes, in ditches and open swamps, or along streams.
世界 : N India, Sri Lanka, Bhutan, Nepal, China (S, SW, E & Xizang), Australia, the Philippines, Korea, Japan and the Ryukyus.