Sorbus sitchensis
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| Sitka Mountain-ash | |
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| Sorbus sitchensis flower cymes | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Sorbus |
| Subgenus: | Sorbus |
| Section: | Tianshanicae[1] |
| Species: | S. sitchensis |
| Binomial name | |
| Sorbus sitchensis M.Roem. |
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Sorbus sitchensis, also known as Sitka Mountain-ash, is a small shrub of the western United States.
[edit] 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.
[edit] References
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Wikimedia Commons has media related to: Sorbus sitchensis |
- ^ a b McAllister, H.A. 2005. The genus Sorbus: Mountain Ash and other Rowans . Kew Publishing.
- ^ Pojar, Jim; Andy MacKinnon (1994). Plants of the Pacific Northwest. Lone Pine Publishing. pp. 71. ISBN 1-55105-042-0.
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