104 FIRST BOOK OF GRASSES 



BOOKS 



The plants one obtains for himself, and he studies 

 them by means of the few tools mentioned before 

 (p. 6). To identify the plants requires books. 



A recently published work, "The Genera of 

 Grasses of the United States," by A. S. Hitchcock, 

 Bulletin 772, United States Department of Agricul- 

 ture, giving keys to tribes and genera, descriptions 

 and illustrations of all the genera, and notes on the 

 more important species, as well as indications of 

 exceptions, most helpful to the beginner, is the first 

 book which the student should acquire. It may be 

 obtained from the Superintendent of Documents, 

 Government Printing Office, Washington, D. C., 

 at 40 cents a copy. The farmer, the agricultural 

 student, or the botanist who wishes only to be able 

 to identify any conspicuous or useful, weedy or 

 injurious grass of his neighborhood requires nothing 

 more than this and the manual of botany covering 

 his region. The following are the current manuals: 



From Maine to Virginia and west to Minnesota 

 and Missouri, inclusive: Gray's New Manual of 

 Botany, 7th edition, 1908 (grasses, by A. S. Hitch- 

 cock) ; Britton's Manual of the Flora of the Northern 

 States and Canada, 3d edition, 1907 (grasses, by 

 G. V. Nash), extending west to the western boundary 

 of Kansas and Nebraska; Britton and Brown's 

 Illustrated Flora of the Northern United States, 

 Canada, and the British Possessions, second edition, 



