(First upload on October 30 2013. Last on November 29 2021) [ 日本語 | English ]
Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
HOME > Plant list (植物リスト) > Polygonaceae (タデ科) > Polygonum lapathifolium
Polygonum L. (タデ)O-oinutade (オオイヌタデ, 大犬蓼), curlytop knotweedLifeform: large annual forb < 2 m in height Distribution: widespread in the northern hemisphere, including Japan Habitat: roadsides, open lands, etc. HUSTEP: Plants and Plant communities in Japan (flora list) Synonyms:
Persicaria lapathifolia (L.) Delarbre var. lapathifolia |
Persicaria nodosa (Pers.) Opiz Different taxonomyPersicaria lapathifolia (L.) Delarbre
var. lapathifolia (オオイヌタデ) |
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[1] beside an artificial pond in front of Sarobetsu Wetland Center, northern Hokkaido, on August 29 2021. [2/3] at a roadside, N10/W1, North Ward, Sapporo, on September 4 2013. [4] along an unpaved road near Zenibako Coast, where wind-power farm is established, near Sapporo on September 16 2020. [5/6] in an openland, N13/W4, North Ward, Sapporo, on November 21 2018. Records: on a trail adjacent to Toyonaka Park along Shojin River, Sapporo, on September 18 2021.