(First upload on October 12 2009. Last on October 28 2017) [ 日本語 | English ]

Calamagrostis epigeios (L.) Roth

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

Calamagrostis Adans. (ノガリヤス)
Yama-awa (ヤマアワ, 山粟), chee reedgrass
Lifeform: perennial grass
Distribution: widespread in the temperate regions of the Northern Hemisphere
Habitat: grasslands, common on the volcano Mount Usu in the early stages after the succession
Chromosome number: 2n = 28, 42 or 56

Deyeuxia epigeios (L.) Mabb., often used
Arundo epigeios L.
C. epigeios (L.) Roth ssp. extremiorientalis Tzvelev, var. extremiorientalis (Tzvelev) Kitag., and C. extremiorientalis (Tzvelev) Probat.

Five subspecies reported from Russia (Tsvelev 1976), three of them are distributed in Japan
ssp. extremiorientalis Tzvelev (イヌヤマアワ)
ssp. glomerata (Boiss. et Buhse) Tzvelev
ssp. epigeios,the type

Calamagrostis epigeios in Hokkaido

[1/2] established with Miscanthus sinensis in the Nishiyama Craters on August 30 2017. [3] seedlings emerged directly from spikes. Near the Nishiyama Crater on June 20 2006. ⇒ Flora on Mount Usu. [4] along the Sosei River, N22E1, East Ward, Sapporo, on July 9 2014. Discarded: on the foot of Nishiyama Craters on September 9 2009. Record: on a small hill in an area for establishing a thermal power plant on the Okotsu District (興津) of Kushiro City, western Hokkaido, on September 26 2017. Along a walkboard in a post-mined peatland near Sarobetsu Visitor Center, northern Hokkaido, on August 13 2021.