124 



GRASSES OF IOWA. 



North America. Sandy beaches and sandy soil. Massachusetts to 

 Wisconsin (La Crosse, Pammel), Illinois, Minnesota, Iowa and 

 Georgia. 



Fig. 90. Aristida tuberculosa, purpurea and oligantha. Three species of 

 Ari^tida showing spikelets. (From photograph.) 



2. STIPA. 



Stipi L. Sp. PI. 78. 1753. Endlicher Gen. PI. 88. Bentham and 

 Hooker Gan. PI. 3: 1141. Hackel in Engler and Prantl. Nat. Pflanz. Fam . 

 II. 2: 46. /. 44 Scribner. Bull. U.S. Dept. Agrl. 20: 62. f. 40. 



Macrochloa Kunth. Rev. Gram: 1: 58 1835. 



Art Stella Bertol. PI. Ital. 1: 690. 1833. 



StreplachneK. Br. Prod. 174. 1810. 



Jarava Ruiz and Pav. Prod. Fl. Per. 2: PI. 1. 1794. 



Lasiagrostis Link. Hort. tSerol. 1: 99. 1827. 



Orthorapkium Nees. Proc. Linn. Soc. 1: 94. 1841. 



Achnatherum Beauv. Agros. 19. 1812. 



Plilagrostis Griseb in Led. Fl. Ross. 4: 447. 1853. 



