Wild Columbine (Aquilegia canadensis) found growing throughout much of the eastern United States. This plant is also frequently used as a perennial flower in gardens.

Details: 

(Top)  Canon EOS 10D,  shutter 1/125 second, aperture f5.6, ISO 400, Canon EF 100 mm macro lens, Canon MR-14EX ring flash.

(Bottom)  Canon EOS 10D,  shutter 1/90 second, aperture f11, ISO 200, Canon EF 100 mm macro lens, Canon MR-14EX ring flash.

Selected References:

Thieret John W, Niering William A, and Olmstead Nancy C. National Audubon Society Field Guide to North American Wildflowers, Eastern Region. New York: Alfred A. Knopf, Inc. Plate 404, P 725.

USDA-NRCS. "Plant profile for Aquilegia canadensis L."  The PLANTS Database (http://plants.usda.gov/ ). National Plant Data Center, Baton Rouge, LA 70874-4490 USA. 2004. < http://plants.usda.gov/cgi_bin/topics.cgi?earl=plant_profile.cgi&symbol=AQCA  > (8 May 2005).