b« GRASSES OF IOWA. 



C. R. Ball has given an excellent account of the methods of exter- 

 mination, its description and its introduction in the southern states. It 

 rarely prevails in Iowa as the plant cannot stand the severe winter cli- 

 mate of this state. 



DISTRIBUTION. 



Iowa. Wild Cat Den. (Reppert) ; Ames (Pammel, Stewart, Sir- 

 rine). 



North America. In fields and waste places from southern Penn- 

 sylvania west to Missouri and Texas; all over the southern states. 



General. Southern Europe, western Asia and Africa. 



Fig . 26. Andropogon Sorghum and some of its varieties, i, Kaffir corn; 2, Jerusalem corn ; 

 .?, Amber sorghum. (Kansas State Board of Agrl. ) 



7. ANDROPOGON SORGHUM. 



Andropogon Sorghum. Brot. Fl. Lusit. 88. 1804. 



Andropogon Sorghum vox. sativus Hackel. D. C. Mon. Phan. 6: 505. 

 1889. 



Andropogon Sorghum var. Durra. Hackel. The True Grasses. 59. 

 /. 18. 1890. 



Andropogon vulgare. Pers. Chapman Fl. Southern States. 583. 1883. 



Holcus Sorghum L. Sp. PI. 2: 347. 1753. 



Sorghum vulgare Pers. Syn. I0l.pl. 1. 1805. 



