Keywords: Veronicastrum virginicum NRCS-1.jpg en Veronicastrum virginicum L Farw - Culver's root 1989 http //plants usda gov/java/largeImage imageID vevi4_001_avp tif USDA-NRCS PLANTS Database / USDA SCS 1989 Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln Robert H Mohlenbrock 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 Photographs by Robert H Mohlenbrock Veronicastrum virginicum |