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As treated in its broad sense, the genus is divided into two main and three or four small subgenera: 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).
The rowans (/ ˈ r aʊ ə n z / ROW-ənz or / ˈ r oʊ ə n z / ROH-ənz) [1] or mountain-ashes are shrubs or trees in the genus Sorbus of the rose family, Rosaceae.They are native throughout the cool temperate regions of the Northern Hemisphere, with the highest species diversity in the Himalaya, southern Tibet and parts of western China, where numerous apomictic microspecies occur. [2]
Sorbus americana is cultivated as an ornamental tree, for use in gardens and parks. It prefers a rich moist soil and the borders of swamps, but will flourish on rocky hillsides. A cultivar is the red cascade mountain-ash, or Sorbus americana 'Dwarfcrown'. It is planted in gardens, and as a street tree. [11]
The mountain ash (Sorbus spp.) is not a true ash (Fraxinus spp.). The true ash trees are much taller and are typically grown as street trees or shade trees. The smaller mountain ash is a member of ...
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 arachnoidea Koehne; Sorbus arvonensis Sell [2] 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 ...
The trees developed in a highly complex fashion, which involved the common whitebeam (Sorbus aria) giving rise to the tetraploid rock whitebeam (Sorbus rupicola) which is still found on Holy Isle. This species is able to survive at higher altitudes and therefore occupies a less competitive niche with fewer tree species able to tolerate the ...
Inflorescence with honeybee. It is a medium-sized deciduous tree growing to 10–20 m (33–66 ft) tall with a stout trunk usually up to 60 cm (24 in), but sometimes as much as 2–3 m (6.6–9.8 ft) in diameter, [citation needed] and grey bark; the crown is dome-shaped, with stout horizontal branches.