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Aria eminens
Species of flowering plant From Wikipedia, the free encyclopedia
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Aria eminens, commonly known as the round-leaved whitebeam,[2] is a species of plant in the family Rosaceae. It is endemic to Great Britain and is threatened by habitat loss.
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Description
Aria eminens is broadly similar to Aria edulis. It is a shrub or small tree up to 10 m (33 ft) tall. The undersides of the leaves are greyish-white due to the many hairs. The leaves are more or less round, usually with a length 1–1.3 times the width, rarely up to 1.5 times as long as wide; they usually have 9–11 veins on either side. The leaf margins usually have a single series of teeth ("uniserrate") although there can be evidence of a second series ("biserrate"). The fruits have many lenticels, small and large, mainly towards the base.[3]
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Distribution and habitat
Aria eminens is endemic to parts of south-west England and south Wales. It is considered to be native to calciferous woodland in north Somerset, west Gloucestershire, Herefordshire and Monmouthshire.[3] It has also been recorded in Sutton Park, Birmingham, well outside its expected range, where it is assumed to have been planted originally.[4]
Evolution
A. eminens is a tetraploid, resulting from hybridisation between Aria edulis and Aria porrigentiformis.[5]
References
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