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(First upload on October 30 2013. Last on November 29 2021) [ 日本語 | English ]

Polygonum lapathifolium L.






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Polygonum L. (タデ)
O-oinutade (オオイヌタデ, 大犬蓼), curlytop knotweed
Lifeform: 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 lapathifolia (L.) Gray subsp. nodosa (Pers.) A. Love

Persicaria nodosa (Pers.) Opiz
Persicaria tenuiflora (Pers.) H. Hara
Polygonum komarovii H. Lev.
Polygonum lapathifolium L. ssp. nodosum (Pers.) Fr.
Polygonum nodosum Pers.

Different taxonomy
Persicaria lapathifolia (L.) Delarbre

var. lapathifolia (オオイヌタデ)
var. incana (Roth) H. Hara (サナエタデ)
var. lanata (Roxb.) H. Hara (キヌタデ)

索引

Polygonum lapathifolium in Hokkaido


ST1 ST2 ST3
ST4 ST5 ST6
[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.

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