| Smooth Rose (Rosa blanda) Aiton, 1789 |
| Synonyms: Rosa johannensis, Rosa rousseauiorum, Rosa subblanda, Rosa williamsii, meadow rose, prairie rose |
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Rosa blanda is native to central and eastern North America from the southern Northwest Territories to the Atlantic Provinces of Canada, and south to Missouri and Virginia (Map); introduced in central Europe. It grows in sandy or rocky soils in meadows, prairies, stream banks, forest edges, and ditches; 0-700 m. Colony-forming shrub, 1-2 m in height. New stems and branches are green, turning reddish-brown or orange-red with age. The upper portions are generally smooth, but the lower stems are covered with scattered, bristly prickles. Leaves are alternate and compound, with 5-9 leaflets. The leaflets are elliptic, often rounded at the tip, with serrated edges; sparsely pubescent. The flowers are borne singly or in corymbs of 1-5; five pink to deep-rose rounded petals, sometimes notched at the tip. Smooth Rose blooms in June-July. The fruit is a berry or drupe (rose hip); turns bright red in late summer. Hybridizes with the non-native Rosa rugosa in the St. Lawrence Estuary; the hybrids may have invasive potential and threaten genetic integrity R. blanda.
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D41410 Smooth Rose (Rosa blanda) Bruce Peninsula Ontario, Canada Copyright © Michael Patrikeev All Rights Reserved |
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