Keywords: Pascopyrum smithii NRCS-2.jpg en Pascopyrum smithii Rydb Barkworth D R Dewey - western wheatgrass 2013-02-22 16 35 40 http //plants usda gov/java/largeImage imageID agsm_002_avp tif USDA-NRCS PLANTS Database / USDA SCS 1989 Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln Robert H Mohlenbrock USDA SCS 1989 Midwest wetland flora Field office illustrated guide to plant species Midwest National Technical Center Lincoln Courtesy of USDA NRCS Wetland Science Institute PD-USGov Uploaded with UploadWizard Pascopyrum smithii Photographs by Robert H Mohlenbrock |