Sorbus sitchensis: Difference between revisions

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==Description==
==Description==
A multistemmed shrub, it is [[Endemism|endemic]] to northwestern [[North America]], from the [[Pacific Ocean|Pacific]] coast of [[Alaska]], to the mountains of [[Washington (state)|Washington]], [[Oregon]] and northern [[California]] and eastward to parts of [[Idaho]] and western [[Alberta]] and [[Montana]]. It is widespread in [[British Columbia]].<ref name= Pojar >{{cite book | last = Pojar | first = Jim | coauthors = Andy MacKinnon | title = Plants of the Pacific Northwest | publisher = Lone Pine Publishing | pages = 71 | date = 1994 | id = ISBN 1-55105-042-0}}</ref>
A multistemmed shrub, it is [[Endemism|endemic]] to northwestern [[North America]], from the [[Pacific Ocean|Pacific]] coast of [[Alaska]], to the mountains of [[Washington (state)|Washington]], [[Oregon]] and northern [[California]] and eastward to parts of [[Idaho]] and western [[Alberta]] and [[Montana]]. It is widespread in [[British Columbia]].<ref name= "Pojar1994" >{{cite book | last = Pojar | first = Jim | coauthors = Andy MacKinnon | title = Plants of the Pacific Northwest | publisher = Lone Pine Publishing | pages = 71 | date = 1994 | id = ISBN 1-55105-042-0}}</ref>


[[Image:Sorbus_sitchensis_26638.JPG|left|thumb|''Sorbus sitchensis'' fall foliage and fruit]]
[[Image:Sorbus_sitchensis_26638.JPG|left|thumb|''Sorbus sitchensis'' fall foliage and fruit]]
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* Winter buds: Not sticky with rusty hairs.
* 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.
* 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.<ref name="">{{cite web | last = Sullivan | first = Steven. K. | title = Sorbus sitchensis | work = Wildflower Search | date = 2013 | url = http://www.wildflowersearch.com/search?oldstate=bloom%3AIgnore%3B&PlantName=Sorbus+sitchensis | accessdate = 2013-03-17 }}
* Flowers: After the leaves are fully grown, June through September.<ref name="Sullivan2013">{{cite web | last = Sullivan | first = Steven. K. | title = Sorbus sitchensis | work = Wildflower Search | date = 2013 | url = http://www.wildflowersearch.com/search?oldstate=bloom%3AIgnore%3B&PlantName=Sorbus+sitchensis | accessdate = 2013-03-17 }}
</ref> White, small, 80 or fewer, borne in flat compound cymes three or four inches across.
</ref> 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<ref name=McAllister2005/> red, borne in cymous clusters.
* Fruit: Berry-like pome, globular, one-quarter of an inch across, bright pinkish<ref name=McAllister2005/> red, borne in cymous clusters.

Revision as of 23:09, 17 March 2013

Sitka Mountain-ash
Sorbus sitchensis flower cymes
Scientific classification
Kingdom:
(unranked):
(unranked):
(unranked):
Order:
Family:
Genus:
Subgenus:
Section:
Tianshanicae[1]
Species:
S. sitchensis
Binomial name
Sorbus sitchensis

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

Description

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.[2]

Sorbus sitchensis fall foliage and fruit

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[1] red, borne in cymous clusters.
Natural range

References

  1. ^ a b McAllister, H.A. 2005. The genus Sorbus: Mountain Ash and other Rowans . Kew Publishing.
  2. ^ Pojar, Jim (1994). Plants of the Pacific Northwest. Lone Pine Publishing. p. 71. ISBN 1-55105-042-0. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  3. ^ Sullivan, Steven. K. (2013). "Sorbus sitchensis". Wildflower Search. Retrieved 2013-03-17.