Keywords: Bidens discoidea NRCS-1 4x3.jpg en Bidens discoidea Torr A Gray Britton - small beggarticks 1995 http //plants usda gov/java/largeImage imageID bidi_002_ahp tif Robert H Mohlenbrock USDA-NRCS PLANTS Database / USDA NRCS 1995 Northeast wetland flora Field office guide to plant species Northeast National Technical Center Chester Robert H Mohlenbrock USDA NRCS 1995 Northeast wetland flora Field office guide to plant species Northeast National Technical Center Chester Courtesy of USDA NRCS Wetland Science Institute PD-USGov Uploaded with UploadWizard Bidens discoidea Photographs by Robert H Mohlenbrock |