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Sorbus aucuparia, commonly called rowan (/ ˈ r oʊ ən /, [3] also UK: / ˈ r aʊ ən /) and mountain-ash, is a species of deciduous tree or shrub in the rose family. The tree has a slender trunk with smooth bark, a loose and roundish crown, and its leaves are pinnate in pairs of leaflets on a central vein with a terminal leaflet.
Sorbus (Sorbus) now genus Sorbus s.s., are commonly known as the rowan (primarily in the UK) or mountain-ash (in Ireland, North America and the UK), with compound leaves usually hairless or thinly hairy below; fruit carpels not fused; the type is Sorbus aucuparia (European rowan). Distribution: cool-temperate Northern Hemisphere. Sorbus (Aria)
The best-known species is the European rowan Sorbus aucuparia, a small tree typically 4–12 metres (13–39 ft) tall growing in a variety of habitats throughout northern Europe and in mountains in southern Europe and southwest Asia.
The tree species Sorbus americana is commonly known as the American mountain-ash. [4] It is a deciduous perennial tree, native to eastern North America. [5]The American mountain-ash and related species (most often the European mountain-ash, Sorbus aucuparia) are also referred to as rowan trees.
Sorbus aucuparia L. Sorbus bissetii McAll. Sorbus bulleyana McAll. Sorbus californica Greene; Sorbus carmesina McAll. Sorbus cashmiriana Hedl. Sorbus cibagouensis H.Peng & Z.J.Yin; Sorbus cinereopubescens McAll. Sorbus commixta Hedl. Sorbus coxii McAll. Sorbus decora (Sarg.) C.K.Schneid. Sorbus discolor (Maxim.) Maxim. Sorbus dolichofoliolatus ...
The rock whitebeam interbred with the rowan / mountain ash (Sorbus aucuparia) to produce the hybrid, a fertile separate species the Scottish whitebeam (Sorbus arranesis) which grows well in this zone of reduced competitive growth at higher altitudes.
NVC community W9 (Fraxinus excelsior - Sorbus aucuparia - Mercurialis perennis woodland) is one of the woodland communities in the British National Vegetation Classification system. It is one of the six communities falling in the "mixed deciduous and oak/birch woodlands" group.
Hedlundia species are small trees or shrubs, with simple leaves, pinnatilobate (having lobes arranged in a pinnate manner) or basally pinnate with 1–2(–3) leaflets. They are white- or greenish-grey-tomentose (covered with dense, matted, woolly hairs) beneath, with 7–15 pairs of lateral veins, with small to prominent, long, sub-acute to obtuse lobes with a variable number of teeth.