Cirsium occidentale, with the common name cobweb thistle or cobwebby thistle, is a North American species of thistle in the sunflower family.
The plant is widespread and fairly common across most of California: in its mountain ranges, valleys, and the Mojave Desert; and in the western Great Basin region in western Nevada, southern Oregon, and southwestern Idaho.Unlike many introduced thistles, this native species is not a troublesome weed.
Cirsium occidentale is a biennial forming a taproot. It may ...
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