(First upload on October 9 2008. Last on June 29 2020) [ 日本語 | English ]

Geum aleppicum Jacquin

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

Geum L. (ダイコンソウ)
Oodaikonsou (オオダイコンソウ, 大大根草), yellow avens
Lifeform: deciduous perennial forb < 100 cm hgih
Distribution: widespread in the temperate Northern Hemisphere (Europe - Russia - Asia, including northern Japan - North America)
Habitat: wet meadows, swamps, woods, and forests (established in a Polygonum sachalinense grassland on the caldera rim of Mount Usu) ⇒ Flora on Mount Usu
Seed dispersal: animal (ecto-zoochore)
Chromosome number: 2n = 42
ssp. aleppicum: Europe and Asia

f. plenum Miyabe ex T. Inoue (ヤエオオダイコンソウ)

ssp. strictum Fernald: North America. (syn. Geum strictum Aiton)

Geum aleppicum in Hokkaido

ssp. aleppicum

Geum1 Geum2 Geum3
Geum4 Geum5
[1] at a forest edge near Utonai Lake on June 11, 2008. The leaf usually consists of three leaflets. [2-4] in the Arboretum of Hokkaido University adjacent to Poplar Boulevard in the Hokkaido University campus on May 27 2015. [5] along a forest road in the Shibecha Experimental Forest of Kyoto University, eastern Hokkaido, on June 24 2019.

f. plenum

Geum1 Geum2 Geum3
[1-3] in the crater basin of Mount Usu (有珠山, flora) on June 24 2020.