Grasses: Panicum to Danthonia

Because the nature of grass structures is generally so different from that of other flowering plants, a special terminology is applied to them. Mohlenbrock cites these terms, with descriptions that will make identification of unknown specimens possible. His division of the grass family into subfamilies and tribes is a major depar­ture from the sequence followed in most flora. Synonyms, with complete author citation, which have been applied to spe­cies in the northeastern United States are given under each species.   In addition, each species of grass is pro­vided with a description, a distribution map, a discussion of its habitat and varia­bility, and a full-page drawing showing diagnostic characters.