Keywords: Lemna perpusilla NRCS-2.png en Lemna perpusilla Torr - minute duckweed 1989 http //plants usda gov/java/largeImage imageID lepe_003_avd tif USDA-NRCS PLANTS Database / USDA NRCS Wetland flora Field office illustrated guide to plant species USDA Natural Resources Conservation Service Mark Mohlenbrock USDA NRCS Wetland flora Field office illustrated guide to plant species USDA Natural Resources Conservation Service Provided by NRCS National Wetland Team Fort Worth TX PD-USGov Uploaded with UploadWizard Lemna perpusilla Wetland flora Field office illustrated guide to plant species |