Sorbus sitchensis

Updated on Oct 21, 2023

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Kingdom Plantae Family Rosaceae Subgenus Sorbus Scientific name Sorbus sitchensis Rank Species		Order Rosales Genus Sorbus Section Tianshanicae Higher classification Mountain-ash

Similar Mountain‑ash, Sorbus scopulina, Sorbus decora, Rosaceae, Sorbus americana

Sorbus sitchensis, also known as western mountain ash and Sitka mountain-ash, is a small shrub of northwestern North America.

Sorbus sitchensis wwwnwplantscomimagescommonsSorbussitchensis

Description

Sorbus sitchensis FileSorbus sitchensis 9810JPG Wikimedia Commons

A multistemmed shrub, it is endemic to northwestern North America, from the Pacific coast of Alaska, to the mountains of Washington, Oregon and northern California and eastward to parts of Idaho and western Alberta and Montana. It is widespread in British Columbia.

The otherwise similar Sorbus scopulina has yellow-green sharp-pointed leaflets that are sharply serrated over most of their length.

Sorbus sitchensis FileSorbus sitchensis 9966JPG Wikimedia Commons

Winter buds: Not sticky with rusty hairs.

Leaves: Alternate, compound, six to ten inches long, Leaflets seven to ten, blue-green, lanceolate or long oval, with rounded tip, toothed usually from the middle to the end. In autumn they turn yellow, orange and red. Stipules leaf-like, caducous.

Flowers: After the leaves are fully grown, June through September. White, small, 80 or fewer, borne in flat compound cymes three or four inches across.

Fruit: Berry-like pome, globular, one-quarter of an inch across, bright pinkish red, borne in cymous clusters.

Sorbus sitchensis Washington Native Plant Society Photograph of Sorbus sitchensis

Sorbus sitchensis Sorbus sitchensis Fact Sheet

Sorbus sitchensis FileSorbus sitchensis 9752JPG Wikimedia Commons

References

Sorbus sitchensis Wikipedia

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