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Asteraceae
Cirsium

not marked as a favorite taxon Cirsium P. Miller. Common name: Thistle.

Key to Cirsium

A genus of about 250 species, herbs, north temperate.

Key adapted in part from Cronquist (1980); portions of key based on Keil (2006f).

Glossary (beta!)

References: Cronquist (1980); Keil (2006f) In Flora of North America Editorial Committee (2006a); Nesom (2021i); Nesom (2022a). Show full citations.

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Show species in Cirsium

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image #1 of Cirsium© Keith Bradley | Cirsium altissimum | Original Image ⭷
image #2 of Cirsium© John Gwaltney | Cirsium arvense | Original Image ⭷
image #3 of Cirsium© Floyd A. Griffith | Cirsium altissimum | Original Image ⭷
image #4 of Cirsium© Scott Ward | Cirsium muticum | Original Image ⭷
image #5 of Cirsium© Sonnia Hill | Cirsium engelmannii | Original Image ⭷
image #6 of Cirsium© Gary P. Fleming | Cirsium pumilum | Original Image ⭷
image #7 of Cirsium© Bruce A. Sorrie | Cirsium repandum | Original Image ⭷
image #9 of Cirsium© Gary P. Fleming | Cirsium virginianum
image #11 of Cirsium© Scott Ward | Cirsium muticum
image #13 of Cirsium© J.W. Hardin | Cirsium vulgare | Original Image ⭷
image #15 of Cirsium© Scott Ward | Cirsium carolinianum | Original Image ⭷

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