Английская Википедия:Aria eminens
Шаблон:Short description Шаблон:Speciesbox
Aria eminens, commonly known as the round-leaved whitebeam,[1] is a species of plant in the family Rosaceae. It is endemic to Great Britain and is threatened by habitat loss.
Description
Aria eminens is broadly similar to Aria edulis. It is a shrub or small tree up to Шаблон:Convert 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.[2]
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.[2] It has also been recorded in Sutton Park, Birmingham, well outside its expected range, where it is assumed to have been planted originally.[3]
Evolution
A. eminens is a tetraploid, resulting from hybridisation between Aria edulis and Aria porrigentiformis[4]
References
- ↑ Шаблон:BSBI 2007
- ↑ 2,0 2,1 Шаблон:Cite book p. 209.
- ↑ Шаблон:Cite book p. 271.
- ↑ Robertson, A., Rich, T.C., Allen, A.M., Houston, L., Roberts, C.A.T., Bridle, J.R., Harris, S.A. and Hiscock, S.J., 2010. Hybridization and polyploidy as drivers of continuing evolution and speciation in Sorbus. Molecular Ecology, 19(8), pp.1675-1690.