Rosa rubiginosa


Rosa rubiginosa is a species of rose native to Europe and western Asia.

Description

[Image:Rosa rubiginosa sl20.jpg|upright|thumb|left|Rosa rubiginosa sepals, prickles, glandular hairs]
[Image:20140110Rosa rubiginosa1.jpg|thumb|left|171px|Ripe fruits (called "hips")]
It is a dense deciduous shrub 2–3 meters high and across, with the stems bearing numerously hooked prickles. The foliage has a strong apple-like fragrance. The leaves are pinnately compound, 5–9 cm long, with 5–9 rounded to oval leaflets with a serrated margin, and numerous glandular hairs. The flowers are 1.8–3 cm in diameter, the five petals being pink with a white base, and the numerous stamens yellow; the flowers are produced in clusters of 2–7 together, from late spring to mid-summer. The fruit is a globose to oblong red hip 1–2 cm in diameter.

Etymology

Its name eglantine is from Middle English eglentyn, from Old French aiglantin, from aiglent 'sweetbrier', from Vulgar Latin *aculentus, from Latin aculeus 'prickle', from acus 'needle'. Sweet refers to the sweet, apple fragrance of the leaves, while briar ~ brier refers to it being a thorny bush.

Distribution and habitat

Rosa rubiginosa is native to most of Europe with the exception of the extreme north, where it inhabits pastures and thorny bushes from the montane to the subalpine floor, with a sunny, continental climate. It is somewhat rare, with isolated specimens near roads and pastures frequented by cattle. Its presence is doubtful in western Asia. In Southern Europe it lives in higher altitudes, usually. In Portugal it is classified as Critically Endangered and is restricted to the Serra da Estrela range.

Cultivation and uses

In addition to its pink flowers, it is valued for its scent and the hips that form after the flowers and persist well into the winter.
During World War II, the British relied on rose hips and hops as presumed sources of vitamins A and C, leading to the British wartime expression: "We are getting by on our hips and hops."

Invasive species

Rosa rubiginosa has become an invasive species in most of Argentine Patagonia and in the south of Chile, particularly where the steppe meets the forest. Cattle spread the seed efficiently through their feces. Poor knowledge of how detrimental it is to the local economy and native species has led Rosa rubiginosa to become an existing invasive threat, causing several millions of dollars' worth of damage each year. It is an invasive species in southeast Australia, and is classified as a restricted plant in New Zealand banned from sale, propagation and distribution in the Auckland, Canterbury, and Southland regions. The New Zealand Department of Conservation classifies R. rubiginosa as an "environmental weed". The plant is present in extensive areas of pasture and tussock grasslands in the Otago and Canterbury regions, where the seeds are spread by cattle, possums and birds that eat the hips. Growth from seed is aided by the reduction in competing pasture by rabbits. It is listed as a Category 1 Declared Weed in South Africa. These plants may no longer be planted or propagated, and all trade in their seeds, cuttings or other propagative material is prohibited.