(First upload on November 3 2009. Last on March 3 2017) [ 日本語 | English ]

Rosa acicularis Lindl.

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

Rosa L. (バラ)
O-o-takane-ibara (オオタカネイバラ, 大高嶺茨), prickly rose or arctic rose
Lifeform: deciduous shrub < 3 m in height
Distribution: a Holarctic distribution in northern Asia, Europe, and North America

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)

Habitat: open forest, and thickets

Species checklist in Alaska

Stem: many spines
Leaflet = 5-7
Fruit: hip = red, shaped European pear (oblong)
Chromosome number: 2n = 42 or 56

Rosa bourgeauiana Crèp.
Rosa sayi Schwein.


Rosa acicularis in boreal zones


Rosa1 Rosa2 Rosa3 Rosa4
[1] at the Upper Chatanika Camp Site near Fairbanks on August 11 2009. [2] along a paved road, Fairbanks, on August 10 2014. [3/4] at a park where we camped, Fairbnaks, on August 5 2014.


Rosa1 Rosa2
Rosa3 Rosa4 Rosa5
[1/2] at a trail to go Mount Higashi-Nupukaushinupuri (1252 m elevation), eastern Hokkaido, on June 27 2013. [3-5] transplanted along Sapporo-Shindo Road on N30/E20, East Ward, on August 14 2014. Record: transplanted in the backyard of Fujimi Road Station, northern Hokkaido, on August 29 2018.

Siberia (cf. acicularis)

Rosa6 Rosa7
[4/5] at Spasskaya Pad Scientific Forest Station (62°14'N, 129°37'E; 220 m elevation) in Sakha Republic on July 16 1995.