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Keywords from Image Description:
Helianthus grosseserratus NRCS. en Helianthus grosseserratus Martens sawtooth sunflower usda gov imageID hegravp tif USDANRCS PLANTS Database USDA SCS Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln ill Summers USDA SCS Midwest wetland flora Field office illustrated