Keywords: Apera interrupta HC-1950.png en Apera interrupta L P Beauv - dense silkybent 1950 http //plants usda gov/java/largeImage imageID apin_001_avd 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 Apera interrupta - botanical illustrations |