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(First upload on September 22 2008. Last on July 18 2021) [ 日本語 | English ]

Geum L. (ダイコンソウ) G. macrophyllum Willd. var. macrophyllum, the type var. sachalinense (Koidz.) H. Hara Karafutodaikonsou (カラフトダイコンソウ, 樺太大根草), largeleaf avens Lifeform: Large, deciduous perennial forb Distribution: Sakhalin - Japan (central Honshu - Hokkaido) - Kuril Habitat: mainly grasslands

Flora on Mount Usu Seedbank (埋土種子): well-developed (survived for more than 30 years in the former topsoil under thick volcanic deposits on Mount Usu (Tsuyuzaki 2010) Synonyms: Geum aleppicum Jacq. var. sachalinense (Koidz.) Ohwi Geum japonicum Thunb. var. sachalinense Koidz. Geum macrophyllum Willd. ssp. fauriei (H.Lév.) Vorosch.

Geum macrophyllum in Hokkaido

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Mount Usu (有珠山)

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[1/2] rosettes in the crater basin on September 19, 2008. The seeds were extracted from the former topsoil under thick volcanic deposits, by a centrifuged flotation method, 20 years after the eruptions.

Hokkaido (北海道)

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[3] at Goshiki Spa, Niseko, on June 26 2006. [4/5] at a field trip near Usujiri Fisheries Station of Hokkaido University, southern Hokkaido, on June 17 2015. [6] along Fureai Course in Nopporo Forest Park on July 17 2021.