Plants — 23,046 Species
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All Plants Species
Cirsium arisanense Kitam.
Cirsium arisanense Kitam.
Cirsium arisanense is a Taiwan-endemic Asteraceae flowering plant named for the Alishan Range that grows at 2,300m near mountain summits.
Cirsium arizonicum (A.Gray) Petr.
Cirsium arizonicum (A.Gray) Petr.
Cirsium arizonicum, the Arizona thistle, is a variable North American thistle native to the southwestern US and northwestern Mexico.
Cirsium arvense (L.) Scop.
Cirsium arvense (L.) Scop.
Cirsium arvense, also called creeping thistle, is an adaptive invasive perennial weed with ecological uses and human applications.
Cirsium brevistylum Cronquist
Cirsium brevistylum Cronquist
Cirsium brevistylum, commonly called Indian or clustered thistle, is an annual/biennial thistle native to moist habitats in western North America.
Cirsium canum (L.) All.
Cirsium canum (L.) All.
The original material for Cirsium canum (L.) All. consists of Vandelli, Herb. Linn. No. 966.26 (LINN) and an [icon] in Bauhin & Cherler's 1651 Hist. Pl. Univ. 3 (1): 44.
Cirsium carolinianum (Walter) Fernald & Schub.
Cirsium carolinianum (Walter) Fernald & Schub.
Cirsium carolinianum is a North American biennial thistle native to the central and southern US, growing in woodlands, fields, and roadsides.
Cirsium discolor (Muhl. ex Willd.) Spreng.
Cirsium discolor (Muhl. ex Willd.) Spreng.
Cirsium discolor, or field thistle, is a North American thistle attractive to butterflies and used in prairie restoration and cheese making.
Cirsium eatonii (A.Gray) B.L.Rob.
Cirsium eatonii (A.Gray) B.L.Rob.
Cirsium eatonii is a variable spiny erect herb with several recognized varieties native to the western United States.
Cirsium edule Nutt.
Cirsium edule Nutt.
Cirsium edule (edible thistle) is a monocarpic thistle native to western North America, with edible parts used by Native Americans.
Cirsium erisithales (Jacq.) Scop.
Cirsium erisithales (Jacq.) Scop.
Cirsium erisithales is a yellow-flowered thistle widespread but uncommon across mountain regions of southern and eastern Europe.
Cirsium flodmanii (Rydb.) Arthur
Cirsium flodmanii (Rydb.) Arthur
Cirsium flodmanii is a spiny perennial thistle native to Canada and the northern US that grows in grasslands and pastures.
Cirsium fontinale (Greene) Jeps.
Cirsium fontinale (Greene) Jeps.
Cirsium fontinale is a perennial thistle endemic to limited California serpentine habitats, with three recognized varieties, two of which are endangered.
Cirsium ×helenioides (L.) Hill
Cirsium ×helenioides (L.) Hill
Many authors treated Cirsium x helenioides and C. heterophyllum as synonymous, but Talavera & Valdes (1976) showed C. x helenioides is a hybrid of C. heterophyllum and C. rivulare, making it the correct name for the taxon.
Cirsium heterophyllum (L.) Hill
Cirsium heterophyllum (L.) Hill
Cirsium heterophyllum is a spineless thistle native to northern Europe and Central Asia with historical use against sadness.
Cirsium hookerianum Nutt.
Cirsium hookerianum Nutt.
Cirsium hookerianum (Hooker's/white thistle) is a North American thistle native to mountain regions of western Canada and the northwestern U.S.
Cirsium horridulum Michx.
Cirsium horridulum Michx.
Cirsium horridulum Michx. is a spiny biennial herb with colorful flower heads that hosts butterfly larvae and feeds pollinators.
Cirsium japonicum Fisch. ex DC.
Cirsium japonicum Fisch. ex DC.
Cirsium japonicum is a perennial thistle in the sunflower family native to eastern Asia.
Cirsium kamtschaticum Ledeb. ex DC.
Cirsium kamtschaticum Ledeb. ex DC.
Cirsium kamtschaticum (Kamchatka thistle) is a spiny thistle species native to Alaska, East Asia, and North Pacific islands.
Cirsium mohavense (Greene) Petr.
Cirsium mohavense (Greene) Petr.
Cirsium mohavense, virgin or Mojave thistle, is a native thistle of the southwestern US that grows in moist desert spots.
Cirsium muticum Michx.
Cirsium muticum Michx.
Cirsium muticum Michx., or swamp thistle, is a biennial thistle native to North American wetlands that hosts several butterfly and moth species.
Cirsium neomexicanum A.Gray
Cirsium neomexicanum A.Gray
Cirsium neomexicanum is a tall spiny thistle with colored disc florets that is usually not a troublesome noxious weed.
Cirsium occidentale (Nutt.) Jeps.
Cirsium occidentale (Nutt.) Jeps.
Cirsium occidentale is a native thistle native to western US that hosts butterfly larvae and is not a troublesome weed.
Cirsium ochrocentrum A.Gray
Cirsium ochrocentrum A.Gray
Cirsium ochrocentrum is a spiny perennial thistle, used medicinally by the Zuni people, that grows as a weed in disturbed areas.
Cirsium oleraceum (L.) Scop.
Cirsium oleraceum (L.) Scop.
Cirsium oleraceum is a herbaceous perennial thistle native to most of Europe and parts of Asia, growing in wet lowland soils.
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