This section is from the book "A Manual Of Weeds", by Ada E. Georgia. Also available from Amazon: A Manual Of Weeds.
American Grasses. Department of Agriculture, Washington.
Weeds and How to Eradicate Them.
Webb Publishing Co., St. Paul. Small, John K.
Flora of the Southeastern United States. Spillman, W. J.
Farm Grasses of the United States. Orange Judd Co. Strasburger, E.
Handbook of Practical Botany. Macmillan Co. Stevens, George T.
Illustrated Guide to Flowering Plants. Dodd, Mead & Co.
Walton, George L.
Practical Guide to Wild Flowers and Fruits.
J. B. Lippincott Co. Ward, H. Marshall.
Grasses. Cambridge University Press, London.
Warren, George F.
Elements of Agriculture. Macmillan Co.