Polygonum pulchrum

絨毛蓼

Polygonum pulchrum Bl.

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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Bl., Bijdragen tot de flora van Nederlandsch Indië 530. 1825. (Bijdr. Fl. Ned. Ind.)

Persicaria tomentosa Sasaki

Sasaki, List Pl. Form. (Sasaki) 170. 1928.
Polygonum tomentosum Will.

Kudo & Masam., Annual report of the Taihoku botanic garden, Faculty of Science and Agriculture, Taihoku Imperial Univeristy , Formosa, Japan 2: 53. 1932. (Ann. Rep. Taihoku Bot. Gard., 台北帝國大學理農學部附屬植物園年報)

herb

Annual ascending herbs, to 100 cm tall; stems much branched, hirsute; nodes enlarged.
Leaves subsessile, lanceolate, 7–14 cm long, 1.5–2.5 cm wide, apex acuminate, base attenuate, both surfaces hirsute; ocreae tubular, apex truncate, strigose, upper margins ciliate.
Inflorescences 3–7-flowered fascicles in spike-like panicles, terminal or in axils of upper leaves, densely flowered, interrupted below, 3–5 cm long; peduncles hirsute, 1–2.5 mm long; bracts funnelform, pilose, apex acute, upper margins ciliate. Flowers white; pedicels included; perianth segments 5, elliptic, ca. 3 mm long, apex obtuse; stamens 5; styles 2-cleft, included; nectaries present.
Achenes dark brown, biconvex, smooth, slightly shining, 2–3 mm long.

台灣 : in wet places at lower altitudes.
世界 : Africa, India, Sri Lanka, Myanmar, Thailand, Indonesia, Malaysia, Australia, S China and Okinawa (Kitadaito-jima).