Red triangles, Thurber spiny herb, Thurber's spineflower
2021 Bryant Baker 2022 Steve Matson 2024 Mike Russler 2022 Steve Matson 2024 Thomas Egan 2015 Michael Charters 2023 Mike Russler 2023 Mike Russler 2023 Mike Russler 2023 Mike Russler 2023 Mike Russler 2023 Mike Russler 2020 Matt Berger 2022 Steve Matson 2021 Bryant Baker 2010 Steve Matson 2010 Steve Matson 2010 Steve Matson 2019 Marisa Persaud
Centrostegia thurberi is an annual herb that is native to California, and also found elsewhere in western North America.
[swbiodiversity.org] Morphology: Centrostegia thurberi is fairly consistent morphologically throughout its range except for individuals in some populations in the mountains of the southern Coast Ranges that tend to have slightly longer and more robust involucres. The name var. macrotheca is available for such plants. (link added by Mary Ann Machi)
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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]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 05/21/2025).
