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(First upload on March 31 2016. Last on July 31 2020) [ 日本語 | English ]

Equisetum L. (トクサ) Inugugina (イヌスギナ, 犬杉菜), marsh horsetail, or the humpback Lifeform: summergreen perennial horsetail Morophology: highly variable (often misidentified)

Distribution: widespread in cool regions of Eurasia (northern part of Japan) and North America Habitat: sunny, wet sites Discarded varieties var. japonicum Nakai f. verticillatum Milde

Equisetum palustre in Hokkaido

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[1/2] near Akanuma (Red Pond), Kushiro Moor, eastern Hokkaido, on June 28 2015. [3] along a boardwalk near Kushiro Wetland Visitor Center, eastern Hokkaido, on June 5 2019. [4/5] in Abira wetland, central Hokkaido, on June 16 2020.