Английская Википедия:Cirsium douglasii
Шаблон:Short description Шаблон:Speciesbox
Cirsium douglasii is a species of thistle known by the common names Douglas' thistle and California swamp thistle.[1][2]
It is native to the central coast and northern California ranges, foothills, and plateaus, and adjacent parts of southern Oregon and northwest Nevada.[3] It grows in wet places in a number of types of habitat.[4]
Description
This native thistle, Cirsium douglasii, is a biennial or short-lived perennial herb growing up to Шаблон:Convert tall, with a branching woolly stem. The longest gray-tomentose leaves, located about the base of the plant, are up to Шаблон:Convert long. They are sometimes lobed or toothed and are borne on a spiny petiole.[5]
The inflorescence is a cluster of several flower heads surrounded by small leaves. Each flower head is up to Шаблон:Convert long and lined with purple-tipped spiny phyllaries. The head contains purple or white flowers. The fruit is a dark-colored achene Шаблон:Convert long/diameter with a pappus which may reach Шаблон:Convert in length.[5]
- Varieties[6]
- Cirsium douglasii var. breweri (A.Gray) D.J.Keil & C.E.Turner - California, Oregon, Nevada
- Cirsium douglasii var. douglasii - California
References
External links
- Шаблон:Commons category-inline
- Jepson Manual treatment — Cirsium douglasii
- Cirsium douglasii — Calphotos Photos gallery, University of California
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Biota of North America Program 2014 county distribution map
- ↑ Calflora taxon report, University of California, Cirsium douglasii DC., Douglas' thistle, swamp thistle
- ↑ 5,0 5,1 Flora of North America: Cirsium douglasii
- ↑ Ошибка цитирования Неверный тег
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- Английская Википедия
- Cirsium
- Flora of the Western United States
- Natural history of the California chaparral and woodlands
- Natural history of the California Coast Ranges
- Natural history of the San Francisco Bay Area
- Plants described in 1838
- Flora without expected TNC conservation status
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- Википедия
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