CHAPTER V. 



Partial Bibliography Pertaining to Grasses. 



The following are some of the more important works dealing 

 with the subject of grasses. 



As a matter of convenience to the student of grasses, there is 

 appended to the descriptive part of this volume a list of some of 

 the more important works on grasses, as well as papers dealing 

 with the flora of Iowa and the adjoining states. In making up the 

 distribution of grasses some of these papers have been consulted. 

 I have not relied on them except where I felt confident that the 

 species occurred. For the Mexican distribution, I have made use 

 in many cases of the statements in Biologia Centrali Americani, 

 as references to these species of Mexico and Central America are 

 based on specimens found in the Kew Gardens. I have in a similar 

 way made use of Watson and Brewer's Botany of California* 

 Macoun's Catalogue of Canadian Plants, Macmillan's Metaspermae 

 of the Minnesota Valley, Coulter's Flora of Texas, Mohr's Flora 

 of Alabama, the distribution given by Watson and Coulter in 

 Gray's Manual and Britton's Manual, but above all I have used the 

 distribution given in the various publications of the Division of 

 Agrostology, United St ates Department of Agriculture. Owing 

 to the many changes that have been made in the names of species, 

 it was, of course, impossible in most cases to make use of the 

 many excellent catalogues. 



The following abbreviations referring to the character of the 

 literature have been used: Ec. (Economic), Fl. (Floras), Hist. 

 (Historical), Morph. (Morphological), Ph. (Physiological), Syst. 

 (Systematic). 



