(First upload on October 24 2009. Last on March 3 2014) [ 日本語 | English ]

Spiraea stevenii (C. K. Schneider) Rydberg

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

Spiraea L. (シモツケ)
No Japanese name (* アラスカシモツケ, 試訳 tentative translation), beauverd spirea (USDA), or Alaska spiraea
Lifeform: deciduous shrub ≈ 30 cm high (occasionally ≈ 1 m high)
Distribution: northwestern part of the North America (also reported from eastern Siberia) → amphi-Beringian
Habitat: moist to wet streambanks, meadows and thickets

wildfire (森林火災)

Flower: white to pinkish in a flat-topped cluster
Chromosome number: 2n = 14 or 18 (reported from Far East)

Spiraea beauverdiana C. K. Schneid., auct. non.
Spiraea beauverdiana C. K. Schneid. var. stevenii C. K. Schneid.
Spiraea betulifolia Pall. var. aemiliana (C. K. Schneid.) Koidz. (エゾノマルバシモツケ)


Spiraea stevenii in Alaska

[1-3] on the slope of Poker Flat near Fairbanks, Alaska, on July 30 2006. In the site, the forest is dominated by Picea mariana that recieved intensive wildfire in 2004. [4] at a research site in Kougarok, Seward Peninsula, AK, on August 9 2013. It was rain.