Keywords: Catapodium rigidum HC-1950.png en Catapodium rigidum L C E Hubbard ex Dony - ferngrass 1950 http //plants usda gov/java/largeImage imageID scri3_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 Catapodium rigidum - botanical illustrations |