2017 James Bailey 2020 Bob Sweatt 2020 Bob Sweatt 2023 Julie A. Kierstead 2016 Erik Larsen 2019 Gustavo Vasquez 2018 Julie Kierstead Nelson 2008 John Dittes 2019 Cynthia Powell 2019 Gustavo Vasquez 2021 Emily Sluiman 2023 Julie A. Kierstead 2023 Julie A. Kierstead 2023 Julie A. Kierstead 2020 Bob Sweatt 2020 Mark Kircher 2004 Steve Matson
Cirsium vulgare is a perennial herb that is not native to California.
[USDA FEIS] Origins and Introduction: Bull thistle is native to Europe, from Britain and Iberia northward to Scandinavia, eastward to western Asia, and southward to northern Africa. It is found on every continent except Antarctica, although its distribution is confined mostly to the northern and southern temperate zones. Bull thistle is not native to North America. It is thought to have been introduced to eastern North America during colonial times, and to western North America in scattered locations in the late 1800s and early 1900s. Bull thistle is now common throughout the Pacific States, and it is the most common and widespread of pasture and rangeland thistles in western North America. (contributed by Jessica Johnston)
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2017 James Bailey:!2020 Bob Sweatt:!2020 Bob Sweatt:!2023 Julie A. Kierstead:!2016 Erik Larsen:!2019 Gustavo Vasquez:!2018 Julie Kierstead Nelson:!2008 John Dittes:!2019 Cynthia Powell:!2019 Gustavo Vasquez:!2021 Emily Sluiman:!2023 Julie A. Kierstead:!2023 Julie A. Kierstead:!2023 Julie A. Kierstead:!2020 Bob Sweatt:!2020 Mark Kircher:!2004 Steve Matson:!
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Suggested Citation
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2023. Berkeley, California:The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 12/11/2023).