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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 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 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.
Species of Sorbus (s.l.) are commonly known as whitebeam, rowan, mountain-ash and service tree. The exact number of species is disputed depending on the circumscription of the genus, and also due to the number of apomictic microspecies , which some treat as distinct species, but others group in a smaller number of variable species.
Sorbus vilmorinii, the Vilmorin's rowan [1] or Vilmorin's mountain ash, is a species of flowering plant in the family Rosaceae, native to Sichuan, Tibet and Yunnan in China.. It is a deciduous shrub or small tree, 4–6 metres (13–20 ft) tall, with ferny leaves, each having multiple leaflets that turn purple in autumn (fall).
Sorbus commixta, the Japanese rowan, is a species of flowering plant in the family Rosaceae, native to central and eastern China, Korea, Japan, and Sakhalin (in the Russian Far East). [ 1 ] [ 2 ] [ 3 ]
The common name of this species is named in honor of American botanist Edward Lee Greene. [2] Throughout the Cascade Mountains and the Pacific Northwest portions of this rowan's habitat, it is commonly called Cascade mountain-ash, sometimes listed as Sorbus scopulina var. cascadensis. [3] Various birds and mammals, including bears, eat the ...
Sorbus californica, the California mountain ash, [2] is an aggregate species of rowans native to western North America.The tree or bush is found in the mountains of California as the name suggests, but is not an ash, and this plant is sometimes cultivated.