Cirsium douglasii

Taxonavigation

Taxonavigation: Asterales
Classification System: APG IV Superregnum: Eukaryota Regnum: Plantae Cladus: Angiosperms Cladus: Eudicots Cladus: Core eudicots Cladus: Asterids Cladus: Campanulids Ordo: Asterales

Cirsium douglasii DC., Prodr. 6: 643 (1838).

Homotypic
- Carduus undulatus var. douglasii (DC.) Greene, Proc. Acad. Nat. Sci. Philadelphia 44: 360 (1892 publ. 1893).

Native distribution areas:
Northern America Northwestern U.S.A. Oregon. Southwestern U.S.A. California, Nevada. References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2^nd Edition

Keilin, D. 2006. Cirsium. Pp. in Flora of North America Editorial Committee (ed.), Flora of North America North of Mexico. Volume 19-20-21: Asteraceae. Oxford University Press, New York / Oxford. ISBN 978-0-19-531822-7. efloras Reference page.

Govaerts, R. et al. 2024. Cirsium douglasii in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2024 June 24. Reference page.
International Plant Names Index. 2024. Cirsium douglasii. Published online. Accessed: June 24 2024.
Hassler, M. 2024. World Plants. Synonymic Checklist and Distribution of the World Flora. . Cirsium douglasii. Accessed: 24 June 2024.
Hassler, M. 2024. Cirsium douglasii. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2024. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2024 June 24. Reference page.

English: Douglas' thistle, California swamp thistle

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