(Upload on October 31 2009) [ 日本語 | English ]

Equisetum variegatum Schleich. ex F. Weber et D. Mohr

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

Equisetum L. (トクサ)
Chisimahimedokusa (チシマヒメドクサ, 千島姫木賊), variegated horsetail
Lifeform: evergreen perennial horsetail < 40 (80) cm in height
Morophology: highly variable (often misidentified)

ssp. variegatum
ssp. alaskanum (A. A. Eaton) Hultén

Distribution: widespread in the Northern Hemisphere (tundra), including Hokkaido

Rare → RDB Japan (2007) = VU

Habitats: wetlands (湿原), including river banks and lake shores, and wet subalpine zone → tussock (谷地坊主)

Equisetum variegatum in Alaska


[1/2] in a tussock tundra near Toolik Lake LTER Station, on August 8 2009.