Biology:Sorbus sitchensis
From HandWiki
| Sitka mountain-ash | |
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| Flower cymes | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Sorbus |
| Species: | S. sitchensis
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| Binomial name | |
| Sorbus sitchensis M.Roem.
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| Range of Sorbus sitchensis | |
| Synonyms | |
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Sorbus sitchensis, commonly known as western mountain ash[1] and Sitka mountain-ash, is a small species of shrub of north-western North America.
Description
A multi-stemmed shrub, it is endemic to north-western North America, from the Pacific coast of Alaska, to the mountains of Washington (state) , Oregon and northern California and eastward to parts of Idaho and western Alberta and Montana. It is widespread in British Columbia.[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, June through September.[3] 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[4] red, borne in cymous clusters. They are enjoyed by the Richardson's grouse.[5]
Uses
While not choice eating, the fruits are consumed by some birds in winter.[6]
References
- ↑ "Sorbus sitchensis". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=SOSI2. Retrieved 24 November 2015.
- ↑ Pojar, Jim; Andy MacKinnon (1994). Plants of the Pacific Northwest. Lone Pine Publishing. pp. 71. ISBN 1-55105-042-0.
- ↑ Sullivan, Steven. K. (2013). "Sorbus sitchensis". Wildflower Search. http://www.wildflowersearch.com/search?oldstate=bloom%3AIgnore%3B&PlantName=Sorbus+sitchensis. Retrieved 2013-03-17.
- ↑ McAllister, H.A. 2005. The genus Sorbus: Mountain Ash and other Rowans . Kew Publishing.
- ↑ Peattie, Donald Culross (1953). A Natural History of Western Trees. New York: Bonanza Books. p. 510.
- ↑ Fagan, Damian (2019). Wildflowers of Oregon: A Field Guide to Over 400 Wildflowers, Trees, and Shrubs of the Coast, Cascades, and High Desert. Guilford, CT: FalconGuides. pp. 90. ISBN 978-1-4930-3633-2. OCLC 1073035766. https://www.worldcat.org/oclc/1073035766.
Wikidata ☰ Q3938471 entry
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