(First upload on August 6 2011. Last on November 8 2019) [ 日本語 | English ]

Rumex acetosa L.

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

Rumex L. (スイバ)
suiba (スイバ, 酢葉), (common) sorrel
Lifeform: perennial forb (dioecism) with 50-80 cm in height
Distribution: temperate regions between Europe and Asia
Habitat: sunny arablelands and grasslands as a weed (雑草)
Use: wild vegetable = edible, and medicine

Poison: not reported. The leaves and stems contain sugars and fats (→ acidic flavor). The roots contain tannin,
Oseille (Fr.) = sorrel, young shoots used for salad


Rumex acetosa in Hokkaido

Sorrel1 Sorrel2 Sorrel3 Sorrel4
Sorrel5 Sorrel6 Sorrel7
[1-3] on July 9 2009. The background is the mouth of Teshio River. [4] along a paved road in Sotogou Park (外濠公園), Tokyo, on November 18 2016. [5] in the a historical place of Kitano purification plant, Kobe, western Japan, on March 16 2019. [6/7] near Ugui River, Esashi, southern Hokkaido, on May 15 2019.