Rough-fruited Cinquefoil (Potentilla recta) found on a grassy hill above a pond at Big Hollow Recreation Area in Des Moines County, Iowa. The plant may also be referred to as Sulfer Cinquefoil.

Details: 

(Top)  Canon EOS 10D,  shutter 1/180second, aperture f9.5, ISO 100, Canon EF 100 mm macro lens, Canon MR-14EX ring flash.

(Bottom)  Canon EOS 10D,  shutter 1/180 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 234, P 752.

USDA-NRCS. "Plant profile for Potentilla recta 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=PORE5  > (13 June 2005).