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This species is accepted, and its native range is W. & Central Canada to N. Mexico.
A specimen from Kew's Herbarium

Native to:

Alberta, Arizona, British Columbia, California, Colorado, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Manitoba, Mexico Northeast, Mexico Northwest, Michigan, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, Oregon, Pennsylvania, Saskatchewan, South Dakota, Texas, Utah, Washington, Wisconsin, Wyoming

Cirsium undulatum Spreng. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Douglas, D. [4], Canada K000778253
s.coll. [1079] Cirsium undulatum var. megacephalum K000778254

First published in Syst. Veg. ed. 16, 3: 374 (1826)

Accepted by

  • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0