Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more precisely known as plume thistles. These differ from other thistle genera in having feathered hairs to their achenes. The other genera have a pappus of simple unbranched hairs.
Cirsium edule, the edible thistle or Indian thistle, is a species of thistle in the genus Cirsium, native to western North America from southeastern Alaska south through British Columbia to Washington and Oregon, and locally inland to Idaho.
Cirsium quercetorum is a species of thistle endemic to coastal California, its common names include brownie thistle and Alameda thistle.
Cirsium neomexicanum is a North American species of thistle known by the common names New Mexico thistle, powderpuff thistle, lavender thistle, foss thistle and desert thistle.
Cirsium discolor, the field thistle, is a North American species of plants in the thistle tribe, within the sunflower family. It is native to thirty-three states in the United States as well four Canadian provinces. It occurs across much of eastern and central Canada as well as eastern and central United States. It has been found from New Brunswick west to Saskatchewan and south as far as Texas and Georgia.
Cirsium pumilum var. hillii is a type of thistle endemic to North America. The common name for this plant is Hill's thistle.
Cirsium muticum, also known as swamp thistle, marsh thistle, dunce-nettle, or horsetops, is a North American species of plants in the sunflower family, native to central and eastern Canada and the central and eastern United States.
Cirsium altissimum is a North American species of plants in the thistle tribe within the sunflower family. Common name is tall thistle or roadside thistle. The species is native to the eastern and Central United States, with a range extending from Massachusetts west to North Dakota and south to Texas and the Florida Panhandle.
Cirsium drummondii, called Drummond's thistle, dwarf thistle or short-stemmed thistle, is a North American species of plants in the thistle tribe within the sunflower family. The species is native to central and western Canada, in every province from Ontario to British Columbia, plus the Northwest Territories. In the United States, it has been found only in the Black Hills of Wyoming and South Dakota.
Cirsium grahamii, called Graham’s thistle, is a North American species of plants in the thistle tribe within the sunflower family. The species is native to Sonora, Chihuahua, Durango, Nuevo León, New Mexico, and Arizona.
Cirsium helenioides, called melancholy thistle, is an Asian and Arctic species of plants in the thistle tribe within the sunflower family. The species is native to Greenland, Iceland, Norway, Sweden, Finland, Russia, Xinjiang, Kazakhstan.
Cirsium horridulum, called bristly thistle, horrid thistle, yellow thistle or bull thistle, is a North American species of plants in the thistle tribe within the sunflower family. It is an annual or biennial. The species is native to the eastern and southern United States from New England to Florida, Texas, and Oklahoma as well as to Mexico, Belize, Guatemala, Honduras, and the Bahamas.
Cirsium kamtschaticum, the Kamchatka thistle, is an Alaskan and East Asian species of plants in the thistle tribe within the sunflower family. The species is found in eastern Russia, and on certain islands of the North Pacific: the Aleutian Islands of Alaska and Hokkaido Island in northern Japan.
Cirsium nuttallii, called Nuttall's thistle, is a North American species of plants in the thistle tribe within the sunflower family. The species is native to the coastal plain of the southeastern and south-central United States, from eastern Texas to southeastern Virginia.
Cirsium pulcherrimum, the Wyoming thistle , is a North American species of plants in the thistle tribe within the sunflower family. The species is native to the western United States, primarily in the state of Wyoming but also in surrounding areas.
Cirsium pumilum, the pasture thistle, is a North American species of plants in the thistle tribe within the sunflower family. The species is native to the northeastern and north-central United States as well as to the Canadian Province of Ontario.
Cirsium repandum is a North American species of plants in the thistle tribe within the sunflower family. Common names include sand-hill thistle and coastal-plain thistle. The species is native to the southeastern United States, the coastal plain in Virginia, Georgia, and the Carolinas.
Cirsium texanum is a North American species of plants in the thistle tribe within the sunflower family. Common names include Texas thistle, Texas purple thistle or southern thistle. The species is native to northern Mexico and the southern Great Plains of the south-central United States.
Cirsium turneri is a North American species of plants in the thistle tribe within the sunflower family. Common names include cliff thistle. The species grows in crevices in limestone cliffs in northern Mexico and western Texas.
Cirsium wheeleri is a North American species of plants in the thistle tribe within the sunflower family. Common names include Wheeler’s thistle. It is native to northern Mexico and the southwestern United States.
