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Arran whitebeams
The Arran whitebeams are species of whitebeam endemic to the Isle of Arran, Ayrshire, Scotland.
== Status ==
These trees, sometimes called the Scottish or Arran whitebeam (''Sorbus arranensis''), the bastard mountain ash or cut-leaved whitebeam (''Sorbus pseudofennica'') and the Catacol whitebeam (''Sorbus pseudomeinichii'') are, if rarity is measured by numbers alone, amongst the most endangered tree species in the world. They are protected in Glen Diomhan off Glen Catacol, at the north end of the island by a partly fenced off National Nature Reserve, and are monitored by staff from Scottish Natural Heritage. Only 236 ''Sorbus pseudofennica'' and 283 ''Sorbus arranensis'' were recorded as mature trees in 1980.
They are typically trees of the mountain slopes, close to the tree line. However, they will grow at lower altitudes, and they are being grown within the Brodick Country Park. Also, North Ayrshire Council Parks and Recreation staff are growing specimens for conservation purposes. A few specialist garden centres and tree nurseries are able to supply them as grafts, and Ardrossan Academy in North Ayrshire has a grafted specimen for its use within the Scottish Higher Biology course in which it features as an example of evolution and survival of the fittest.〔("The Quadrangle" ) Ardrossan Academy. Retrieved 10 November 2007.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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