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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.
The name rowan was originally applied to the species Sorbus aucuparia and is also used for other species in the genus Sorbus. [3] Natural hybrids, often including S. aucuparia and the whitebeam, Aria edulis (syn. Sorbus aria), [4] give rise to many endemic variants in the UK. [5]
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)
Occasionally, European white elm (Ulmus laevis) and wild apple tree appear, while small trees include rowan (Sorbus aucuparia) and goat willow (Salix caprea). [9] The flora lacks beech, large-leaved linden, and field maple. [31] The main creators of tree stands are Scots pine, European hornbeam, and black alder.
Rowan Sorbus aucuparia: Arran service tree Sorbus pseudofennica: Finnish whitebeam Hedlundia hybrida (previously, Sorbus hybrida) * Arran whitebeam Sorbus arranensis: Ley's whitebeam Sorbus leyana: Lesser whitebeam Sorbus minima: Swedish whitebeam Sorbus × intermedia * English whitebeam Sorbus anglica: Whitebeam Sorbus aria: Thin-leaved ...
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.
European Rowan (Sorbus aucuparia) Common Whitebeam (Aria edulis, syn. Sorbus aria) and several related apomictic microspecies; Service Tree (Cormus domestica, syn. Sorbus domestica; recently [when?] [citation needed] discovered growing wild on a cliff in south Wales) Wild Service Tree (Torminalis glaberrima, syn. Sorbus torminalis) Apples
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.