Sorbus spp.

In 2010, a total 43 Sorbus spp. taxa were said to be native to Britain and Ireland, 35 of which are endemic to Britain and two to Ireland. Most are rare. The endemic species are thought to have evolved since the last ice age as stable (apomictic) hybrids. They are Britain and Ireland’s only endemic tree species, if they satisfy the definition of a species. Some are priority species, some have been identified too recently to have any official status.

This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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