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(First upload on January 17 2017. Last on October 5 2023) [ 日本語 | English ]

Equisetum scirpoides Michx.






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

Equisetum L. (トクサ)
Himedokusa (ヒメドクサ, 姫木賊), dwarf horsetail or dwarf scouring rush
Lifeform: (semi-)evergreen perennial horsetail
Distribution: the Arctic Circle, including Japan (Hokkaido)

rare (reported from Sarobetsu)
RDB: IB

Habitat: wetlands, forest floors, etc.
Stem: no branching, 3-6 mm in diameter
Chromosome number: n = 108
Use: gardening
ssp. scirpoides
ssp. walkowiaki R. J. Walkowiak
索引

Equisetum scirpoides in Hokkaido


ST1 ST2 ST3
[1] in a large garden store, Sapporo, on November 4 2017. (need to re-check: Equisetum variegatum). [2/3] in the greenhouse of Hokkaido University Botanic Garden on September 30 2023.

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