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

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 ⇔ Sonchus oleraceus L. (ノゲシ)

Sonchus asper in Hokkaido

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1 2 3
4 5 6
[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. Records: at the backyard of Institute for the Advancement of Higher Education, Hokkaido University, on May 5 2023.