Explore 61,963 Species
Cirsium arisanense Kitam.
Cirsium arisanense Kitam.
Cirsium arisanense is a Taiwan-endemic Asteraceae flowering plant named for the …
Cirsium arizonicum (A.Gray) Petr.
Cirsium arizonicum (A.Gray) Petr.
Cirsium arizonicum, the Arizona thistle, is a variable North American thistle na…
Cirsium arvense (L.) Scop.
Cirsium arvense (L.) Scop.
Cirsium arvense, also called creeping thistle, is an adaptive invasive perennial…
Cirsium brevistylum Cronquist
Cirsium brevistylum Cronquist
Cirsium brevistylum, commonly called Indian or clustered thistle, is an annual/b…
Cirsium canum (L.) All.
Cirsium canum (L.) All.
The original material for Cirsium canum (L.) All. consists of Vandelli, Herb. Li…
Cirsium carolinianum (Walter) Fernald & Schub.
Cirsium carolinianum (Walter) Fernald & Schub.
Cirsium carolinianum is a North American biennial thistle native to the central …
Cirsium discolor (Muhl. ex Willd.) Spreng.
Cirsium discolor (Muhl. ex Willd.) Spreng.
Cirsium discolor, or field thistle, is a North American thistle attractive to bu…
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…
Cirsium edule Nutt.
Cirsium edule Nutt.
Cirsium edule (edible thistle) is a monocarpic thistle native to western North A…
Cirsium erisithales (Jacq.) Scop.
Cirsium erisithales (Jacq.) Scop.
Cirsium erisithales is a yellow-flowered thistle widespread but uncommon across …
Cirsium flodmanii (Rydb.) Arthur
Cirsium flodmanii (Rydb.) Arthur
Cirsium flodmanii is a spiny perennial thistle native to Canada and the northern…
Cirsium fontinale (Greene) Jeps.
Cirsium fontinale (Greene) Jeps.
Cirsium fontinale is a perennial thistle endemic to limited California serpentin…
Cirsium ×helenioides (L.) Hill
Cirsium ×helenioides (L.) Hill
Many authors treated Cirsium x helenioides and C. heterophyllum as synonymous, b…
Cirsium heterophyllum (L.) Hill
Cirsium heterophyllum (L.) Hill
Cirsium heterophyllum is a spineless thistle native to northern Europe and Centr…
Cirsium hookerianum Nutt.
Cirsium hookerianum Nutt.
Cirsium hookerianum (Hooker's/white thistle) is a North American thistle native …
Cirsium horridulum Michx.
Cirsium horridulum Michx.
Cirsium horridulum Michx. is a spiny biennial herb with colorful flower heads th…
Cirsium japonicum Fisch. ex DC.
Cirsium japonicum Fisch. ex DC.
Cirsium japonicum is a perennial thistle in the sunflower family native to easte…
Cirsium kamtschaticum Ledeb. ex DC.
Cirsium kamtschaticum Ledeb. ex DC.
Cirsium kamtschaticum (Kamchatka thistle) is a spiny thistle species native to A…
Cirsium mohavense (Greene) Petr.
Cirsium mohavense (Greene) Petr.
Cirsium mohavense, virgin or Mojave thistle, is a native thistle of the southwes…
Cirsium muticum Michx.
Cirsium muticum Michx.
Cirsium muticum Michx., or swamp thistle, is a biennial thistle native to North …
Cirsium neomexicanum A.Gray
Cirsium neomexicanum A.Gray
Cirsium neomexicanum is a tall spiny thistle with colored disc florets that is u…
Cirsium occidentale (Nutt.) Jeps.
Cirsium occidentale (Nutt.) Jeps.
Cirsium occidentale is a native thistle native to western US that hosts butterfl…
Cirsium ochrocentrum A.Gray
Cirsium ochrocentrum A.Gray
Cirsium ochrocentrum is a spiny perennial thistle, used medicinally by the Zuni …
Cirsium oleraceum (L.) Scop.
Cirsium oleraceum (L.) Scop.
Cirsium oleraceum is a herbaceous perennial thistle native to most of Europe and…
