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Rosa Arkansana

Rosa Arkansana

Rosa Arkansana

I was born in 1974 in Canggu, Bali. Well, not quite. I was born in America, in a small town in Washington.The name Rosa arkansana comes from the Arkansas River in Colorado. The species' wide distribution and consequent genetic drift has led to an extensive synonymy. It is a perennial subshrub and its native habitats include prairies, roadsides, and ditches. The plant attracts butterflies and birds. Wild rose is the state flower of the U.S. states of Iowa and North Dakota. In Iowa, convention states the species is Rosa pratincola (currently treated as a synonym of Rosa arkansana). North Dakota, on the other hand, specifies either Rosa arkansana or Rosa blanda. Alberta's "wild rose" is Rosa acicularis.

Rosa

Prairie Rose establishes from seeds distributed by wildlife (typically birds) that have consumed its nourishing fruit. Once established, they spread out from underground rhizomes, often forming colonies. Above ground stems rarely persist for more than a few years before dying back to be replaced by new shoots. All three of Minnesota's native roses appear very similar at first glance. Two primary indicators for R. arkansana identification are its preference for open, sandy prairie and small size which rarely gets over 18 inches and more often just 10-12 inches. Like Prickly Wild Rose (Rosa acicularis) it has prickles on both new and old growth but it lacks the glands found on the leaf stalks of the latter, and their natural ranges barely overlap along a NW to SE line through central Minnesota.

Prickly Rose is also a rather taller plant. Smooth Wild Rose (Rosa blanda) shares the range of R. arkansana throughout the state, but as it name suggests, Smooth Rose lacks bristles on its new growth—it's a mid-sized to tall shrub whose bristly, woody stems persist producing showers of flowers for many years.Keep in mind there are 4 species of wild rose in MN all with similar flowers. You might have come across Rosa arkansana, or possibly Rosa blanda, which is even more common. Something you can check next time is the number of leaflets. R. blanda has 5-9, mostly 7. R. arkansana has 9 or 11 leaflets. R. blanda tends to grow over 3 feet tall, as well. (Source: www.minnesotawildflowers.info)

 

 

 

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