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Article from Bean's Trees and Shrubs Hardy in the British Isles
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'Rosa arvensis' from the website Trees and Shrubs Online (treesandshrubsonline.
A deciduous trailing or climbing shrub, with long slender purplish branches no thicker than stout string, and armed with scattered, short, more or less curved prickles. Leaflets five or seven, varying in shape from orbicular to elliptic or narrowly to broadly ovate, 1⁄2 to 11⁄2 in. long, glabrous on both sides or, more commonly, downy beneath at least on the veins, the underside often glaucous, teeth usually simple and eglandular. Stipules narrow, with spreading auricles. Flowers white, with little or no fragrance, solitary, or up to eight in a corymb. Pedicels slender, 1⁄2 to 2 in. long, they and the ovoid to globose receptacle smooth or somewhat glandular. Sepals long-pointed, with a few slender appendages, usually glabrous and eglandular on the back. Styles exserted, united into a column, usually quite glabrous. Fruits 1⁄4 to 7⁄8 in. long, red, variable in shape, shedding the sepals when ripe.
Native of Europe and southern Anatolia; in the British Isles it is commonest in southern England, very rare in Scotland, widespread but local in Ireland. It is of interest as the only native member of the section Synstylae, with exserted styles united into a column, and is easily distinguished from other British roses by this character and by its slender shoots that often grow several yards in a season. The only other British species with joined styles is R. stylosa (q.v., p. 65), a sturdy bush with the dog rose habit.
As commonly found wild in Britain, R. arvensis is scarcely worthy of cultivation, though it has the ability to grow and flower in the shade of trees. There is, however, a more robust form found wild on the continent and occasionally in Britain, which has stouter, often pruinose stems, more numerous flowers in the inflorescence, and glossier leaflets. It is this form that is figured in Willmott, The Genus Rosa, p. 11, t.
Synonyms
(R. arvensis × R. gallica )