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(Upload on March 26 2011) [ 日本語 | English ]

Amaranthus L. (ヒユ) Himeshirobiyu (ヒメシロビユ), prostrate pigweed or tumble pigweed Lifeform: annual forb Distribution: the tropical Americans (exotic to Japan) Category B in Hokkaido Blue List 2010 Habitat: widespread weed on ruderal habitats, e.g., waste ground, cultivated areas, disturbed sites, roadsides, and railroads Field training on integrated environmental research (統合環境調査法実習)

HUSTEP: Plants and Plant communities in Japan (flora list) Flower: monoecious, male and female organs are produced in different flowers on the same plant Synonyms: Amaranthus albus L. var. pubescens (Uline et Bray) Fernald Amaranthus graecizans auct. non L. p. p. Amaranthus graecizans L. var. pubescens Uline et Bray Amaranthus pubescens (Uline et Bray) Rydb.

Amaranthus albus in Hokkaido

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1 2 3
[1] a patch. [2] a shoot. [3] top of a shoot. [1-3] in a parking lot, northern Hokkaido, on September 13 2010.