Whitebeam

The whitebeams are members of the family Rosaceae, tribe Malinae, comprising a number of deciduous simple or lobe-leaved species formerly lumped together within Sorbus s.l. Many whitebeams are the result of extensive intergeneric hybridisation involving the genera Sorbus (Sorbus aucuparia in particular), Aria, Torminalis and Chamaemespilus. As an effect, they are commonly apomicts (reproducing solely asexually) and many have very restricted ranges. The best known species is the common whitebeam (Aria edulis), a columnar tree which grows to 25 m (82 ft) tall by 10 m (33 ft) broad, with clusters of white flowers in spring followed by speckled red berries in autumn (fall).