The subfamilies and tribes of Gramineae (Poaceae) in the southeastern United States

THE FAMILY GRAMINEAE (POACEAE), the fourth largest family of flowering plants, is represented in the southeastern United States by about 575 species, 130 genera, and 21 tribes assigned to five subfamilies.In number of genera it matches the Compositae (Asteraceae) almost exactly and exceeds both the Leguminosae (Fabaceae) (ca.72 genera) and the Orchidaceae (ca.50 genera) in this area of some 444,000 square miles (1.15 million square kilometers).The present account contains a comprehensive family description; general I ic Fl fthe Southeastern United States, a long-term project made possible 'Prepared for by grants from the National Science Foundation and at this nny, supported be BSR-8111520 (C.E. Wood, Jr., principal investigator), under which a part