Definitive encyclopedia of U.S. grass life. It is the only complete manual of U.S. grasses available and one of the basic reference works in U.S. plant life. It catalogs and describes in detail all 1398 numbered species in 169 numbered genera found in this country. Each species is given thorough botanical description. Proper planting season and range of distribution are noted. Outlines common uses and discusses in general terms distribution, classification, nomenclature, and common names. The appended synonomy of alternate names of each species provides an authoritative taxonomy.