Rosa acicularis

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Rosa acicularis
Rosa acicularis 8448.JPG
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Rosales
Family:
Rosaceae
Genus:
Rosa
Species:
R. acicularis
Binomial name
Rosa acicularis
Subspecies
Synonyms [1]

Rosa acicularis, also known as the prickly wild rose, the prickly rose, the bristly rose, the wild rose and the Arctic rose, is a species of wild rose with a Holarctic distribution in northern regions of Asia,[2] Europe,[3] and North America.

Description

Rosa acicularis is a deciduous shrub growing 1–3 m tall. The leaves are pinnate, 7–14 cm long, with three to seven leaflets. The leaflets are ovate, with serrate (toothed) margins. The flowers are pink (rarely white), 3.5–5 cm diameter; the hips are red, pear-shaped to ovoid, 10–15 mm diameter.

The ploidy of this rose species is variable. Botanical authorities have listed it as tetraploid and hexaploid in North America (subsp. sayi),[4] and octoploid in Eurasia (subsp. acicularis).[4] On the northern Great Plains and in northwest Canada, extending to Whitehorse, Yukon its populations are generally tetraploid.[citation needed]

North America

This native rose species of the U.S. and Canadian northern Great Plains is the provincial flower of Alberta.[5] It is not as common in the Parkland region of the Canadian Prairie provinces as Rosa woodsii (Woods' rose), but is the most abundant rose species growing in the boreal forest of northern Canada and Alaska.

  • Larger stems are usually densely covered with straight prickles.

  • Young flowers are darker in colour.

  • The fruit can be elongate as shown here, or almost round.

  • Since 1987 Rosa acicularis has been pictured on licence plates in the Canadian province of Alberta.

See also

References

  1. ↑ [{{#property:P1421|}} "{{#Property:P225}}"] Check |url= value (help). Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 17 December 2017.
  2. ↑ Robertson, Kenneth R. "Rosa acicularis". Flora of China – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  3. ↑ "Rosa acicularis". Flora Europaea.
  4. ↑ 4.0 4.1 Lewis W.H. (1959). "Monograph of Rosa in North America. I. R. acicularis". Brittonia. 11 (1): 1–24. doi:10.2307/2805073.
  5. ↑ "Government of Alberta's official emblems" (PDF). Archived from the original (PDF) on 2007-01-02.

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