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(First upload on March 24 2012. Last on March 6 2018) [ 日本語 | English ]

Sonchus asper (L.) Hill.






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

Sonchus L. (ノゲシ)
Oni-nogeshi (オニノゲシ, 鬼野芥子), prickly sowthistle
Etymology: oni (ogre) + nogeshi (Sonchus oleraceus)
Lifeform: annual/biennial forb
Distribution: native to Europe (now widespread exotic to the world, including Japan)

reported in Meiji Era

Habitat: roadsides, crop fields, etc., as a weed (雑草)

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)

Leaf: spines on the margins and beneath
Seed dispersal: wind
索引

Sonchus asper in Hokkaido


ST1 ST2 ST3
ST4 ST5 ST6
[1] at Teshio River, northern Hokkaido, on June 16 2011. The plant was dwarf, due probably to strong wind. [2/3] along the Route 5 between Oshamanbe and Yakumo on June 18 2014. [4] at Oshamanbe Amedas Station, southern Hokkaido, on June 15 2015. [5/6] at a location planned a wind power in Kamiyuchi, northern Hokkaido, on November 1 2017.

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