Sorbus

Sorbus is a genus of over 100 species of trees and shrubs in the rose family, Rosaceae. Species of Sorbus (s.str.) are commonly known as rowan or mountain-ash. The genus used to include species commonly known as whitebeam, chequer tree and service tree that are now classified in other genera (see below). The genus Sorbus, as currently circumscribed, includes only the pinnate leaved species of former subgenus Sorbus. Sorbus is not closely related to the true ash trees which belong to the genus Fraxinus, although the leaves are superficially similar.