THE 



BOTANY OF CROP PLANTS 



A TEXT 

 AND REFERENCE BOOK 



BY 



WILFRED W. ROBBINS, Ph. D. 



PROFESSOR OF BOTANY, COLORADO AGRICULTURAL .'tJLLEGE 



WITH A GLOSSARY AND 

 263 ILLUSTRATIONS 



PHILADELPHIA 

 P. BLAKISTON'S SON & CO, 



1012 WALNUT STREET 



