Calflora
Showing records 1 - 50 out of  54 matching records.
Searching for: genus: Cirsium
Click on the Scientific Name to see a Taxon Report.
Cirsium andersonii
Anderson's thistle
native
Perennial herb
Cirsium andersonii
© 2019 Bob Sweatt
Cirsium andersonii
© 2006 Steve Matson
CalPhotos (UCB)
Cirsium andersonii
© 2012 Paul Preston and Tim Lukaszewski
Cirsium andrewsii
Franciscan thistle
rare, native
Perennial herb
Cirsium andrewsii
© 2011 Thomas Reyes
CalPhotos (UCB)
Cirsium andrewsii
© 2013 Robert Sikora
CalPhotos (UCB)
Cirsium andrewsii
© 2011 Thomas Reyes
CalPhotos (UCB)
Cirsium arizonicum
Arizona thistle
native
Perennial herb
Cirsium arizonicum
© 2016 Steve Matson
CalPhotos (UCB)
Cirsium arizonicum
© 2012 James M. Andre
CalPhotos (UCB)
Cirsium arizonicum
© 2007 Steven Thorsted
CalPhotos (UCB)
Cirsium arizonicum var. arizonicum
Arizona thistle
native
Perennial herb
Cirsium arizonicum var. arizonicum
© 2012 Dylan Neubauer
CalPhotos (UCB)
Cirsium arizonicum var. arizonicum
© 2017 Neal Kramer
CalPhotos (UCB)
Cirsium arizonicum var. arizonicum
© 2016 Steve Matson
CalPhotos (UCB)
Cirsium arizonicum var. tenuisectum
Desert mountain thistle
rare, native
Perennial herb
Cirsium arizonicum var. tenuisectum
© 2009 James M. Andre
CalPhotos (UCB)
Cirsium arizonicum var. tenuisectum
© 2014 John Doyen
CalPhotos (UCB)
Cirsium arizonicum var. tenuisectum
© 2003 Hartmut Wisch
CalPhotos (UCB)
Cirsium arvense
Canada thistle
invasive non-native
Perennial herb
Cirsium arvense
© 2008 Keir Morse
CalPhotos (UCB)
Cirsium arvense
© 2018 Joel Trumbo
Cirsium arvense
© 2007 Luigi Rignanese
CalPhotos (UCB)
Cirsium brevistylum
Indian thistle
native
Perennial herb
Cirsium brevistylum
© 2007 Neal Kramer
CalPhotos (UCB)
Cirsium brevistylum
© 2014 Margo Bors
CalPhotos (UCB)
Cirsium brevistylum
© 2018 Brian Charles
Cirsium canescens
Prairie thistle
non-native
Perennial herb
Cirsium canescens
© 2010 Lee Dittmann
CalPhotos (UCB)
Cirsium canescens
© 2008 Zoya Akulova
CalPhotos (UCB)
Cirsium ciliolatum
Ashland thistle
rare, native
Perennial herb
Cirsium ciliolatum
© 2017 Gerald Carr
Cirsium ciliolatum
© 2017 Gerald Carr
Cirsium ciliolatum
© 2017 Gerald Carr
Cirsium crassicaule
Slough thistle
rare, native
Annual, Perennial herb
Cirsium crassicaule
© 2020 Steve Laymon
Cirsium crassicaule
© 2020 Steve Laymon
Cirsium crassicaule
© 2020 Steve Laymon
Cirsium cymosum
Peregrine thistle
native
Perennial herb
Cirsium cymosum
© 2017 Dee Shea Himes
Cirsium cymosum
© 2019 Industrious Walkers of the World
Cirsium cymosum
© 2009 Julie Kierstead Nelson
CalPhotos (UCB)
Cirsium cymosum var. canovirens
Gray-green thistle
native
Perennial herb
Cirsium cymosum var. canovirens
© 2008 Ron Wolf
CalPhotos (UCB)
Cirsium cymosum var. canovirens
© 2005 Steve Tyron
CalPhotos (UCB)
Cirsium cymosum var. canovirens
© 2006 Steve Matson
CalPhotos (UCB)
Cirsium cymosum var. cymosum
Peregrine thistle
native
Perennial herb
Cirsium cymosum var. cymosum
© 2014 Neal Kramer
CalPhotos (UCB)
Cirsium cymosum var. cymosum
© 2013 Aaron Arthur
CalPhotos (UCB)
Cirsium cymosum var. cymosum
© 2013 Aaron Arthur
CalPhotos (UCB)
Cirsium douglasii
Swamp thistle
native
Perennial herb
Cirsium douglasii
© 2019 Julie Kierstead Nelson
Cirsium douglasii
© 2011 Aaron Arthur
CalPhotos (UCB)
Cirsium douglasii
© 1998 James B. Gratiot
CalPhotos (UCB)
Cirsium douglasii var. breweri
Brewer's swamp thistle
native
Perennial herb
Cirsium douglasii var. breweri
© 2019 Julie Kierstead Nelson
Cirsium douglasii var. breweri
© 2010 John Dittes
CalPhotos (UCB)
Cirsium douglasii var. breweri
© 2019 Julie A. Kierstead
Cirsium douglasii var. douglasii
Douglas' swamp thistle
native
Perennial herb
Cirsium douglasii var. douglasii
© 2006 Matt Below
CalPhotos (UCB)
Cirsium douglasii var. douglasii
© 2011 Neal Kramer
Cirsium douglasii var. douglasii
© 2011 Neal Kramer
Cirsium fontinale
Fountain thistle
native
Perennial herb
Cirsium fontinale
© 2007 Neal Kramer
CalPhotos (UCB)
Cirsium fontinale
© 2012 Lech Naumovich
CalPhotos (UCB)
Cirsium fontinale
© 2009 Tom Cochrane
CalPhotos (UCB)
Cirsium fontinale var. campylon also called Cirsium campylon
Mt. hamilton thistle
rare, native
Perennial herb
Cirsium fontinale var. campylon
© 2004 David A. Tharp
CalPhotos (UCB)
Cirsium fontinale var. campylon
© Benjamin C. Hammett 2002 California Academy of Sciences
CalPhotos (UCB)
Cirsium fontinale var. campylon
© 2014 Chris Winchell
CalPhotos (UCB)
Cirsium fontinale var. fontinale
Fountain thistle
rare, native
Perennial herb
Cirsium fontinale var. fontinale
© 2007 Toni Corelli
CalPhotos (UCB)
Cirsium fontinale var. fontinale
© 2011 Scott Cox
CalPhotos (UCB)
Cirsium fontinale var. fontinale
© 2010 Neal Kramer
CalPhotos (UCB)
Cirsium fontinale var. obispoense
Chorro creek bog thistle
rare, native
Perennial herb
Cirsium fontinale var. obispoense
© 2017 Cindy Roessler
Cirsium fontinale var. obispoense
© 2015 David Wolfson
Cirsium fontinale var. obispoense
© 2012 Lynn Robertson
CalPhotos (UCB)
Cirsium hydrophilum
Suisun thistle
native
Perennial herb
Cirsium hydrophilum
© 2010 Doug Wirtz
CalPhotos (UCB)
Cirsium hydrophilum
© 2011 Thomas Reyes
CalPhotos (UCB)
Cirsium hydrophilum
© 2010 Doug Wirtz
CalPhotos (UCB)
Cirsium hydrophilum var. hydrophilum
Suisun thistle
rare, native
Perennial herb
Cirsium hydrophilum var. hydrophilum
© 2010 Doug Wirtz
CalPhotos (UCB)
Cirsium hydrophilum var. hydrophilum
© 2010 Doug Wirtz
CalPhotos (UCB)
Cirsium hydrophilum var. hydrophilum
© 2010 Doug Wirtz
CalPhotos (UCB)
Cirsium hydrophilum var. vaseyi
Mt. Tamalpais thistle
rare, native
Perennial herb
Cirsium hydrophilum var. vaseyi
© 2018 Eliezer Margolis
Cirsium hydrophilum var. vaseyi
© 2011 Vernon Smith
CalPhotos (UCB)
Cirsium hydrophilum var. vaseyi
© 2019 Claire Mallen
Cirsium inamoenum
Greene's thistle
native
Perennial herb
Cirsium inamoenum
© 2013 Barry Breckling
CalPhotos (UCB)
Cirsium inamoenum
© 2020 Bob Sweatt
Cirsium inamoenum
© 2020 Bob Sweatt
Cirsium inamoenum var. inamoenum
Greene's thistle
native
Perennial herb
Cirsium inamoenum var. inamoenum
© 2012 Gary A. Monroe
CalPhotos (UCB)
Cirsium inamoenum var. inamoenum
© 2014 Barry Rice
CalPhotos (UCB)
Cirsium inamoenum var. inamoenum
© 2012 Gary A. Monroe
CalPhotos (UCB)
Cirsium mohavense
Mohave thistle
native
Perennial herb
Cirsium mohavense
© 2018 Ron Vanderhoff
Cirsium mohavense
© 2017 Thomas Egan
Cirsium mohavense
© 2020 Lisa Berry
Cirsium neomexicanum
Desert thistle
native
Perennial herb
Cirsium neomexicanum
© 2004 James M. Andre
CalPhotos (UCB)
Cirsium neomexicanum
© 2005 James M. Andre
CalPhotos (UCB)
Cirsium neomexicanum
© 2013 Belinda Lo
CalPhotos (UCB)
Cirsium occidentale
Western thistle
native
Perennial herb
Cirsium occidentale
© 2018 Stacie Wolny
Cirsium occidentale
© 2020 Ron Vanderhoff
Cirsium occidentale
© 2020 Diane Etchison
Cirsium occidentale var. californicum
California thistle
native
Perennial herb
Cirsium occidentale var. californicum
© 2014 James Gonsman
Cirsium occidentale var. californicum
© 2013 James Gonsman
Cirsium occidentale var. californicum
© 2008 Thomas Stoughton
CalPhotos (UCB)
Cirsium occidentale var. candidissimum
Snowy thistle
native
Perennial herb
Cirsium occidentale var. candidissimum
© 2020 R.A. Chasey
Cirsium occidentale var. candidissimum
© 2019 Matt Berger
Cirsium occidentale var. candidissimum
© 2018 Debra Valov
Cirsium occidentale var. compactum
Compact cobwebby thistle
rare, native
Perennial herb
Cirsium occidentale var. compactum
© 2019 Marisa Persaud
Cirsium occidentale var. compactum
© 2016 Talila Golan
Cirsium occidentale var. compactum
© 2011 Chris Winchell
CalPhotos (UCB)
Cirsium occidentale var. coulteri
Coulter's thistle
native
Perennial herb
no photo
Cirsium occidentale var. lucianum
Cuesta ridge thistle
rare, native
Perennial herb
Cirsium occidentale var. lucianum
© 2019 David Greenberger
Cirsium occidentale var. lucianum
© 2009 Zachary Green
CalPhotos (UCB)
Cirsium occidentale var. lucianum
© 2011 Chris Winchell
CalPhotos (UCB)
Cirsium occidentale var. occidentale
Cobweb thistle
native
Perennial herb
Cirsium occidentale var. occidentale
© 2018 Ken Hickman
Cirsium occidentale var. occidentale
© 2009 John W. Wall
CalPhotos (UCB)
Cirsium occidentale var. occidentale
© 2019 Randy Huey
Cirsium occidentale var. venustum
Venus thistle
native
Perennial herb
Cirsium occidentale var. venustum
© 2004 David A. Tharp
CalPhotos (UCB)
Cirsium occidentale var. venustum
© 2010 James M. Andre
CalPhotos (UCB)
Cirsium occidentale var. venustum
© 2020 Sara Timby
Cirsium ochrocentrum
Beaumont thistle
non-native
Perennial herb
Cirsium ochrocentrum
© 2004 Robert Sivinski
CalPhotos (UCB)
Cirsium ochrocentrum
© 2001 CDFA
CalPhotos (UCB)
Cirsium ochrocentrum var. ochrocentrum
Yellowspine thistle
non-native
Perennial herb
Cirsium ochrocentrum var. ochrocentrum
© 2016 Wynn Anderson
CalPhotos (UCB)
Cirsium praeteriens
Palo alto thistle
rare, native
Perennial herb
no photo
Cirsium quercetorum
Brownie thistle
native
Annual, Perennial herb
Cirsium quercetorum
© 2007 Neal Kramer
CalPhotos (UCB)
Cirsium quercetorum
© 2020 R.A. Chasey
Cirsium quercetorum
© 2013 James Gonsman
Cirsium remotifolium
Few leaved thistle
native
Perennial herb
Cirsium remotifolium
© 2008 Keir Morse
CalPhotos (UCB)
Cirsium remotifolium
© 2008 Keir Morse
CalPhotos (UCB)
Cirsium remotifolium
© 2008 Keir Morse
CalPhotos (UCB)
Cirsium remotifolium var. odontolepis
Pacific fringed thistle
native
Perennial herb
Cirsium remotifolium var. odontolepis
© 2018 Hunter Breck
CalPhotos (UCB)
Cirsium remotifolium var. odontolepis
© 2018 Hunter Breck
CalPhotos (UCB)
Cirsium remotifolium var. odontolepis
© 2020 MCOSD EDRR
Cirsium remotifolium var. remotifolium
Remote-leaved thistle
native
Perennial herb
Cirsium remotifolium var. remotifolium
© © 2008 Keir Morse
CalPhotos (UCB)
Cirsium remotifolium var. remotifolium
© 2008 Keir Morse
CalPhotos (UCB)
Cirsium remotifolium var. remotifolium
© 2008 Keir Morse
CalPhotos (UCB)
Cirsium remotifolium var. rivulare
Klamath thistle
native
Perennial herb
Cirsium remotifolium var. rivulare
© 2011 Gerald Carr
Cirsium remotifolium var. rivulare
© 2011 Gerald Carr
Cirsium remotifolium var. rivulare
© 2011 Gerald Carr
Cirsium rhothophilum
Surf thistle
rare, native
Perennial herb
Cirsium rhothophilum
© 2011 Chris Winchell
CalPhotos (UCB)
Cirsium rhothophilum
© 2011 Chris Winchell
CalPhotos (UCB)
Cirsium rhothophilum
© 2017 John Doyen
CalPhotos (UCB)
Cirsium scabrum
Rough thistle
non-native
Perennial herb
no photo
Cirsium scariosum
Elk thistle
native
Perennial herb
Cirsium scariosum
© 2020 Bob Sweatt
Cirsium scariosum
© 2016 Julie Kierstead Nelson
Cirsium scariosum
© 2020 Bob Sweatt
Cirsium scariosum var. americanum
Dinnerplate thistle
native
Perennial herb
Cirsium scariosum var. americanum
© 2020 Bob Sweatt
Cirsium scariosum var. americanum
© 2014 Neal Kramer
CalPhotos (UCB)
Cirsium scariosum var. americanum
© 2013 Robert F Norris
CalPhotos (UCB)
Cirsium scariosum var. citrinum
Southern meadow thistle
native
Perennial herb
no photo
Cirsium scariosum var. congdonii
Elk thistle
native
Perennial herb
Cirsium scariosum var. congdonii
© 1982 Dean Wm. Taylor
CalPhotos (UCB)
Cirsium scariosum var. congdonii
© 2012 Nicholas Jensen
CalPhotos (UCB)
Cirsium scariosum var. congdonii
© 2017 Neal Kramer
CalPhotos (UCB)
Cirsium scariosum var. loncholepis also called Cirsium loncholepis
La graciosa thistle
rare, native
Perennial herb
Cirsium scariosum var. loncholepis
© 2011 Chris Winchell
CalPhotos (UCB)
Cirsium scariosum var. loncholepis
© 2012 Anuja Parikh and Nathan Gale
CalPhotos (UCB)
Cirsium scariosum var. loncholepis
© 2011 Chris Winchell
CalPhotos (UCB)
Showing records 1 - 50 out of  54 matching records.
    Suggested Citation
    Calflora: Information on California plants for education, research and conservation. [web application]. 2021. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Apr 18, 2021).

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