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Blue Cohosh - Caulophyllum thalictroides


Family: Berberidaceae - Barberry family Genus Common Name: Cohosh Native Status: NativeDicot Perennial Herb
Caulophyllum thalictroides - Blue Cohosh. Possible toxicity, especially to pregnant women.

Found in:
AL, AR, CT, DE, GA, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, NC, ND, NE, NH, NJ, NY, OH, OK, PA, RI, SC, SD, TN, VA, VT, WI, WV

Journal Articles Referencing Cohosh

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Caulophyllum thalictroides

Distribution of Caulophyllum thalictroides in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 17 Oct 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: The Pocket at Pigeon Mountain, Walker County, GA Date: 2009-March-26Photographer: Gerald C Williamson
Nikon D60
1/10f/16 ISO200
Tamron SP 90MM f/2.8 AF Macro
90mm (135 equiv)
Caulophyllum thalictroides

Site: The Pocket at Pigeon Mountain, Walker County, GA Date: 2009-March-21Photographer: Gerald C Williamson
Nikon D60
1/125f/5.6 ISO100
Nikon Nikkor AF-S 55-200mm 4-5.6G ED
200mm (300 equiv) Flash: Yes
Click on the photo for a larger image
Caulophyllum thalictroides

Site: The Pocket at Pigeon Mountain, Walker County, GA Date: 2009-June-06Photographer: Gerald C Williamson
Blue Cohosh berries. When they ripen they will be the plant's namesake blue.
Click on the photo for a larger image
Caulophyllum thalictroides

Site: The Pocket at Pigeon Mountain, Walker County, GA Date: 2009-March-18Photographer: Gerald C Williamson
Nikon D60
1/125f5.6 ISO100
Nikon Nikkor AF-S 55-200mm 4-5.6G ED
165mm (247mm equiv) Flash: Yes
Blue Cohosh clearly does not get its color name from the clusters of star-shaped green flowers.
Click on the photo for a larger image
Caulophyllum thalictroides

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2017
Photographs Copyright owned by the named photographer