PLANTS OF IOWA 131 



HOMALOCENCHRUS, Mieg. 



1627. H. virginicus, (Willd.) Britton. White Grass. 

 Common in moist places. 



1628. H. oryzoides, (L.) Poll. Rice Cut-grass. 

 Common along rivers and borders of marshes. 



1629. //. lenticularis, (Michx.) Scribn. Catch-fly Grass. 

 Frequent in low ground along river. 



PHALARIS, L. 



1630. P. arundinacea, L. Reed Canary Grass. 

 Common in wet places. 



1631. P. canariensis, L. Canary Grass. 



In waste places. Introduced from Europe as bird food. 

 ANTHOXANTHUM, L. 



1632. A. odoratum, L. Sweet Vernal-grass. 

 Common on lawns and in fields. From Europe. 



SAVASTANA, Schrank. 

 ' 1633. 8. odorata, (L.) Scribn. Holy-grass. 



Common in low ground. 

 ARISTIDA, L. 



1634. A. dichotama, Michx. Poverty-grass. 

 Infrequent. 



1635. A. basiramea, Engelm. Forked Aristida. 

 Not common. 



1636. A. longiseta, Steud. Long-awned Aristida. 

 Not common. 



1637. A. oligantka, Michx. Few-flowered Aristida. 

 Dry soil, frequent in patches. 



1638. A. gracilis, Ell. Slender Aristida. 

 In sandy soil, not common. 



1639. A. intermedia, Scribn. & Ball. Intermediate Aristida. 

 Infrequent. 



1640. A. tuberculosa, Nutt. Sea-beach Aristida. 

 Not common, sandy soil. 



STIPA, L. 



1641. 8. viridula, Trin. Green Stipa. 

 Infrequent. 



