Keywords: Glyceria grandis HC-1950-p.png en Glyceria grandis S Watson - American mannagrass illustration cropped to focus on the seed 1950 http //plants usda gov/java/largeImage imageID glgr_001_ahd tif USDA-NRCS PLANTS Database / Hitchcock A S rev A Chase 1950 Manual of the grasses of the United States USDA Miscellaneous Publication No 200 Washington DC Hitchcock A S rev A Chase 1950 Manual of the grasses of the United States USDA Miscellaneous Publication No 200 Washington DC 1950 PD-USGov Uploaded with UploadWizard Manual of the grasses of the United States Glyceria grandis - botanical illustrations |