Keywords: Cardamine douglassii NRCS-1.jpg en Cardamine douglassii Britton - limestone bittercress 1989 http //plants usda gov/java/largeImage imageID cado_002_avp tif William C Taylor USDA-NRCS PLANTS Database / USDA SCS 1989 Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln William C Taylor USDA SCS 1989 Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln Courtesy of USDA NRCS Wetland Science Institute PD-USGov Uploaded with UploadWizard Cardamine douglassii |