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(First upload on August 27 2016. Last on July 20 2022) [ 日本語 | English ]

Rumex longifolius DC.






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

Rumex L. (スイバ)
nodaiou (ノダイオウ, 野大黄), dooryard dock or northern dock
Lifeform: perennial forb (dioecism) ≈ 1 m in height
Distribution: widespread in the cool-temperatre regions of the Northern Hemisphere, including Japan (Hokkaido and Honshu)

Red Data Book: vulnerable (VU, assigned in 2012)

Habitat: sunny and mesic sites, such as ditches, stream sides and grassy marshlands
Leaf: hairless ⇒ Rumex gmelinii (カラフトノダイオウ), hair on hte backside
索引

Rumex acetosa in Hokkaido


ST1 ST2 ST3
ST4
[1-3] in and around Takoppe Wetland, Niikappu Town, south-central Hokkaido, on June 13 2016. [4] in a pond along Horonai River in ToEF on June 10 2022.

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