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(First upload on August 28 2007. Last on January 21 2018) [ 日本語 | English ]

Sonchus L. (ノゲシ) Hachijouna (Hachijo island salad green, ハチジョウナ, 八丈菜), field sowthistle Lifeform: perennial forb growing up to 1 m Distribution: temperate Asia, including Japan Habitat: sunny grasslands, coast, and moor → 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)

Seed dispersal: wind Chromosome number: 2n = 18 Synonyms: Sonchus arenicola Voroschilov Sonchus arvensis L. ssp. brachyotus (DC.) Kitam. Sonchus arvensis L. f. brachyotus (DC.) Kirpicznikov Sonchus arvensis L. var. uliginosus auct. non (M. Bieb.) Trautv.

Sonchus brachyotus in Hokkaido

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[1] near Muroran Marine Station, Hokkaido University, Muroran City, on August 20 2007. [2/3] at the same place on August 22 2011. [4] at Denshinhama Coast, Muroran City, on September 17 2013. [5] on Sunasaki Coast (砂崎海岸), southern Hokkaido, on August 29 2016. [6] on a small hill in an area for establishing a thermal power plant on the Okotsu District (興津) of Kushiro City, western Hokkaido, on September 26 2017.

Mount Usu

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[1-3] near the K-1 Crater of Kompira Craters on September 19 2020.