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

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.)

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).