Sorbus sitchensis: Difference between revisions
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Revision as of 11:32, 17 December 2010
Sitka Mountain-ash | |
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Flowers are 80 or fewer, borne in flat compound cymes three or four inches across. | |
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Section: | Tianshanicae[1]
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Species: | S. sitchensis
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Sorbus sitchensis |
Sorbus sitchensis, also known as Sitka Mountain-ash, is a small shrub of the western United States.
Description
A multistemmed shrub, it is indigenous to the Pacific Coast of North America, from Alaska to northern California and eastward to Idaho and western Montana.[2]
The otherwise similar Sorbus scopulina has yellow-green sharp-pointed leaflets that are sharply serrated over most of their length.
- 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. 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[1] red, borne in cymous clusters.
References
Wikimedia Commons has media related to Sorbus sitchensis.