Английская Википедия:Alnus rhombifolia
Шаблон:Short description Шаблон:Speciesbox
Alnus rhombifolia, the white alder, is an alder tree native to western North America, from British Columbia and Washington east to western Montana, southeast to the Sierra Nevada, and south through the Peninsular Ranges and Colorado Desert oases in Southern California.[1] It occurs in riparian zone habitats at an altitudes range of Шаблон:Convert.[2][3] While not reported in northern Baja California, it has been predicted on the basis of its climatic adaptation to occur there also.[2] Alnus rhombifolia is primarily found in the chaparral and woodlands, montane, and temperate forests ecoregions.[1]
Description
Alnus rhombifolia is a medium-sized deciduous tree growing to Шаблон:Convert (rarely to Шаблон:Convert) tall, with pale gray bark, smooth on young trees, becoming scaly on old trees. The leaves are alternate, rhombic to narrow elliptic, Шаблон:Convert long and Шаблон:Convert broad, with a finely serrated margin and a rounded to acute apex; they are thinly hairy below.[4]
The flowers are produced in catkins. The male catkins are pendulous, slender, Шаблон:Convert long, yellowish, and produced in clusters of two to seven; pollination is in early spring, before the leaves emerge. The female catkins are ovoid, when mature in autumn Шаблон:Convert long and Шаблон:Convert broad, on a Шаблон:Convert stem, superficially resembling a small conifer cone.[4] The small winged seeds disperse through the winter, leaving the old woody, blackish 'cones' on the tree for up to a year after.[1][2][5]
The white alder is closely related to the red alder (Alnus rubra), differing in the leaf margins being flat, not curled under. Like other alders, it is able to fix nitrogen, and tolerates infertile soils.[5]
Medicinal use
Some Plateau Indian tribes use white alder for female health treatment needs.[6]
References
External links
- Jepson Manual treatment- Alnus rhombifolia
- USDA: Alnus rhombifolia - data and range maps
- Alnus rhombifolia - Photo gallery
- ↑ 1,0 1,1 1,2 Шаблон:Cite web
- ↑ 2,0 2,1 2,2 Flora of North America: Alnus rhombifolia
- ↑ Шаблон:GRIN
- ↑ 4,0 4,1 http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-lifeform=any&rel-taxon=contains&where-taxon=Alnus+rhombifolia&rel-namesoup=matchphrase&where-namesoup=&rel-location=matchphrase&where-location=&rel-county=eq&where-county=any&rel-state=eq&where-state=any&rel-country=eq&where-country=any&where-collectn=any&rel-photographer=contains&where-photographer=&rel-kwid=equals&where-kwid=&max_rows=24 calphoto . accessed 9/29/2010
- ↑ 5,0 5,1 Oregon State University: Alnus rhombifolia
- ↑ Шаблон:Cite book
- Английская Википедия
- Alnus
- Trees of Northern America
- Plants described in 1842
- Plants used in traditional Native American medicine
- Garden plants of North America
- Ornamental trees
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