''Cirsium clavatum'', the Fish Lake thistle or fringed thistle, is a
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
n species of plants in the tribe
Cardueae within the family
Asteraceae. The species is native to the western
United States, the States of
Wyoming,
Colorado,
Utah,
Arizona, and
New Mexico.
Keil, David John 2004. Sida 21:207-219
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''Cirsium clavatum'' is a biennial or perennial herb up to 100 cm (40 inches) tall, blooming only once before dying. Leaves have thin spines along the edge, much smaller than those of related species. There are several to many flower heads, with white or pale pink disc florets but no ray florets.[Flora of North America, ''Cirsium clavatum'' (M. E. Jones) Petrak]
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;Varieties[
* ''Cirsium clavatum'' var. ''americanum'' (A.Gray) D.J.Keil - Colorado, Utah, Wyoming
* ''Cirsium clavatum'' var. ''clavatum'' - Colorado, Utah
* ''Cirsium clavatum'' var. ''osterhoutii'' (Rydb.) D.J.Keil - Colorado
]
References
External links
clavatum
Flora of the Western United States
Plants described in 1895
Flora without expected TNC conservation status
{{Cynareae-stub