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Calflora |
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Searching for: | genus: Cirsium |
Click on the Scientific Name to see a Taxon Report. | |
Cirsium andersonii | |||
Anderson's thistle
native
Perennial herb |
![]() © 2019 Bob Sweatt |
![]() © 2006 Steve Matson CalPhotos (UCB) |
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Cirsium andrewsii | |||
Franciscan thistle
rare, native
Perennial herb |
![]() © 2011 Thomas Reyes CalPhotos (UCB) |
![]() © 2013 Robert Sikora CalPhotos (UCB) |
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Cirsium arizonicum | |||
Arizona thistle
native
Perennial herb |
![]() © 2016 Steve Matson CalPhotos (UCB) |
![]() © 2012 James M. Andre CalPhotos (UCB) |
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Cirsium arizonicum var. arizonicum | |||
Arizona thistle
native
Perennial herb |
![]() © 2012 Dylan Neubauer CalPhotos (UCB) |
![]() © 2017 Neal Kramer CalPhotos (UCB) |
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Cirsium arizonicum var. tenuisectum | |||
Desert mountain thistle
rare, native
Perennial herb |
![]() © 2009 James M. Andre CalPhotos (UCB) |
![]() © 2014 John Doyen CalPhotos (UCB) |
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Cirsium arvense | |||
Canada thistle
invasive non-native
Perennial herb |
![]() © 2008 Keir Morse CalPhotos (UCB) |
![]() © 2018 Joel Trumbo |
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Cirsium brevistylum | |||
Indian thistle
native
Perennial herb |
![]() © 2007 Neal Kramer CalPhotos (UCB) |
![]() © 2014 Margo Bors CalPhotos (UCB) |
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Cirsium canescens | |||
Prairie thistle
non-native
Perennial herb |
![]() © 2010 Lee Dittmann CalPhotos (UCB) |
![]() © 2008 Zoya Akulova CalPhotos (UCB) |
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Cirsium ciliolatum | |||
Ashland thistle
rare, native
Perennial herb |
![]() © 2017 Gerald Carr |
![]() © 2017 Gerald Carr |
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Cirsium crassicaule | |||
Slough thistle
rare, native
Annual, Perennial herb |
![]() © 2020 Steve Laymon |
![]() © 2020 Steve Laymon |
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Cirsium cymosum | |||
Peregrine thistle
native
Perennial herb |
![]() © 2017 Dee Shea Himes |
![]() © 2019 Industrious Walkers of the World |
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Cirsium cymosum var. canovirens | |||
Gray-green thistle
native
Perennial herb |
![]() © 2008 Ron Wolf CalPhotos (UCB) |
![]() © 2005 Steve Tyron CalPhotos (UCB) |
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Cirsium cymosum var. cymosum | |||
Peregrine thistle
native
Perennial herb |
![]() © 2014 Neal Kramer CalPhotos (UCB) |
![]() © 2013 Aaron Arthur CalPhotos (UCB) |
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Cirsium douglasii | |||
Swamp thistle
native
Perennial herb |
![]() © 2019 Julie Kierstead Nelson |
![]() © 2011 Aaron Arthur CalPhotos (UCB) |
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Cirsium douglasii var. breweri | |||
Brewer's swamp thistle
native
Perennial herb |
![]() © 2019 Julie Kierstead Nelson |
![]() © 2010 John Dittes CalPhotos (UCB) |
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Cirsium douglasii var. douglasii | |||
Douglas' swamp thistle
native
Perennial herb |
![]() © 2006 Matt Below CalPhotos (UCB) |
![]() © 2011 Neal Kramer |
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Cirsium fontinale | |||
Fountain thistle
native
Perennial herb |
![]() © 2007 Neal Kramer CalPhotos (UCB) |
![]() © 2012 Lech Naumovich CalPhotos (UCB) |
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Cirsium fontinale var. campylon | also called Cirsium campylon | ||
Mt. hamilton thistle
rare, native
Perennial herb |
![]() © 2004 David A. Tharp CalPhotos (UCB) |
![]() © Benjamin C. Hammett 2002 California Academy of Sciences CalPhotos (UCB) |
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Cirsium fontinale var. fontinale | |||
Fountain thistle
rare, native
Perennial herb |
![]() © 2007 Toni Corelli CalPhotos (UCB) |
![]() © 2011 Scott Cox CalPhotos (UCB) |
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Cirsium fontinale var. obispoense | |||
Chorro creek bog thistle
rare, native
Perennial herb |
![]() © 2017 Cindy Roessler |
![]() © 2015 David Wolfson |
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Cirsium hydrophilum | |||
Suisun thistle
native
Perennial herb |
![]() © 2010 Doug Wirtz CalPhotos (UCB) |
![]() © 2011 Thomas Reyes CalPhotos (UCB) |
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Cirsium hydrophilum var. hydrophilum | |||
Suisun thistle
rare, native
Perennial herb |
![]() © 2010 Doug Wirtz CalPhotos (UCB) |
![]() © 2010 Doug Wirtz CalPhotos (UCB) |
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Cirsium hydrophilum var. vaseyi | |||
Mt. Tamalpais thistle
rare, native
Perennial herb |
![]() © 2018 Eliezer Margolis |
![]() © 2011 Vernon Smith CalPhotos (UCB) |
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Cirsium inamoenum | |||
Greene's thistle
native
Perennial herb |
![]() © 2013 Barry Breckling CalPhotos (UCB) |
![]() © 2020 Bob Sweatt |
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Cirsium inamoenum var. inamoenum | |||
Greene's thistle
native
Perennial herb |
![]() © 2012 Gary A. Monroe CalPhotos (UCB) |
![]() © 2014 Barry Rice CalPhotos (UCB) |
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Cirsium mohavense | |||
Mohave thistle
native
Perennial herb |
![]() © 2018 Ron Vanderhoff |
![]() © 2017 Thomas Egan |
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Cirsium neomexicanum | |||
Desert thistle
native
Perennial herb |
![]() © 2004 James M. Andre CalPhotos (UCB) |
![]() © 2005 James M. Andre CalPhotos (UCB) |
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Cirsium occidentale | |||
Western thistle
native
Perennial herb |
![]() © 2018 Stacie Wolny |
![]() © 2020 Ron Vanderhoff |
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Cirsium occidentale var. californicum | |||
California thistle
native
Perennial herb |
![]() © 2014 James Gonsman |
![]() © 2013 James Gonsman |
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Cirsium occidentale var. candidissimum | |||
Snowy thistle
native
Perennial herb |
![]() © 2020 R.A. Chasey |
![]() © 2019 Matt Berger |
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Cirsium occidentale var. compactum | |||
Compact cobwebby thistle
rare, native
Perennial herb |
![]() © 2019 Marisa Persaud |
![]() © 2016 Talila Golan |
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Cirsium occidentale var. coulteri | |||
Coulter's thistle
native
Perennial herb |
no photo |
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Cirsium occidentale var. lucianum | |||
Cuesta ridge thistle
rare, native
Perennial herb |
![]() © 2019 David Greenberger |
![]() © 2009 Zachary Green CalPhotos (UCB) |
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Cirsium occidentale var. occidentale | |||
Cobweb thistle
native
Perennial herb |
![]() © 2018 Ken Hickman |
![]() © 2009 John W. Wall CalPhotos (UCB) |
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Cirsium occidentale var. venustum | |||
Venus thistle
native
Perennial herb |
![]() © 2004 David A. Tharp CalPhotos (UCB) |
![]() © 2010 James M. Andre CalPhotos (UCB) |
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Cirsium ochrocentrum | |||
Beaumont thistle
non-native
Perennial herb |
![]() © 2004 Robert Sivinski CalPhotos (UCB) |
![]() © 2001 CDFA CalPhotos (UCB) |
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Cirsium ochrocentrum var. ochrocentrum | |||
Yellowspine thistle
non-native
Perennial herb |
![]() © 2016 Wynn Anderson CalPhotos (UCB) |
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Cirsium praeteriens | |||
Palo alto thistle
rare, native
Perennial herb |
no photo |
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Cirsium quercetorum | |||
Brownie thistle
native
Annual, Perennial herb |
![]() © 2007 Neal Kramer CalPhotos (UCB) |
![]() © 2020 R.A. Chasey |
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Cirsium remotifolium | |||
Few leaved thistle
native
Perennial herb |
![]() © 2008 Keir Morse CalPhotos (UCB) |
![]() © 2008 Keir Morse CalPhotos (UCB) |
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Cirsium remotifolium var. odontolepis | |||
Pacific fringed thistle
native
Perennial herb |
![]() © 2018 Hunter Breck CalPhotos (UCB) |
![]() © 2018 Hunter Breck CalPhotos (UCB) |
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Cirsium remotifolium var. remotifolium | |||
Remote-leaved thistle
native
Perennial herb |
![]() © © 2008 Keir Morse CalPhotos (UCB) |
![]() © 2008 Keir Morse CalPhotos (UCB) |
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Cirsium remotifolium var. rivulare | |||
Klamath thistle
native
Perennial herb |
![]() © 2011 Gerald Carr |
![]() © 2011 Gerald Carr |
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Cirsium rhothophilum | |||
Surf thistle
rare, native
Perennial herb |
![]() © 2011 Chris Winchell CalPhotos (UCB) |
![]() © 2011 Chris Winchell CalPhotos (UCB) |
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Cirsium scabrum | |||
Rough thistle
non-native
Perennial herb |
no photo |
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Cirsium scariosum | |||
Elk thistle
native
Perennial herb |
![]() © 2020 Bob Sweatt |
![]() © 2016 Julie Kierstead Nelson |
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Cirsium scariosum var. americanum | |||
Dinnerplate thistle
native
Perennial herb |
![]() © 2020 Bob Sweatt |
![]() © 2014 Neal Kramer CalPhotos (UCB) |
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Cirsium scariosum var. citrinum | |||
Southern meadow thistle
native
Perennial herb |
no photo |
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Cirsium scariosum var. congdonii | |||
Elk thistle
native
Perennial herb |
![]() © 1982 Dean Wm. Taylor CalPhotos (UCB) |
![]() © 2012 Nicholas Jensen CalPhotos (UCB) |
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Cirsium scariosum var. loncholepis | also called Cirsium loncholepis | ||
La graciosa thistle
rare, native
Perennial herb |
![]() © 2011 Chris Winchell CalPhotos (UCB) |
![]() © 2012 Anuja Parikh and Nathan Gale CalPhotos (UCB) |
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