Cirsium horridulum Trusted
© Mary Keim
Flickr: EOL Images
Kentucky Native Plant Society. Scanned by Omnitek Inc.
USDA NRCS PLANTS Database
USDA NRCS Wetland Science Institute.
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Willard, Debra A., Christopher E. Bernhardt, Lisa Weimer, Sherri Cooper, Desire Gamez, & Jennifer Jensen. “Atlas of Pollen and Spores of the Florida Everglades” in Palynology, Vol. 28, pp. 175-227. 2004.
© Willard, Debra A.; Bernhardt, Christopher E.; Weimer, Lisa; Cooper, Sherri; Gamez, Desire; Jensen, Jennifer
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Katja Schulz added an association between "Common Eastern Bumblebee (Bombus impatiens) on Purple Thistle (Cirsium horridulum)" and "Cirsium horridulum Michx.".
over 1 year ago
Jason Sharp marked "Purple Thistle (Cirsium horridulum)" as trusted on the "Cirsium horridulum" page.
about 2 years ago
Jason Sharp marked "Cirsium horridulum; purple thistle old clump" as trusted on the "Cirsium horridulum" page.
Jason Sharp marked "purple thistle bud close-up; Cirsium horridulum" as trusted on the "Cirsium horridulum" page.
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