76 THE AMERICAN MIDLAND NATURALIST 



Muhlenbergia diffusa Willd. 



Manhattan. Dry banks and woods. Common. 

 Phlciini pretense L. Timothy. 



Occasionally escaped from cultivation. 

 Alopecurus geniculates L. Marsh Foxtail. 



Moist soil. Frequent. May 15 (13). 

 Sporobolus longifolius (Torr.) Wood. Long-leaved Rush- 

 grass. ' 



Dry banks. Common. Aug. 20. 

 Sporobolus vaginaeflorus (Torr.) Wood. Sheathed Rush-grass. 



Dry roadsides, etc. Common. Flowers late. 

 Sporobolus neglect us Nash. Small Rush-grass. 



Dry roadsides, etc. Common. 

 Sporobolus cuspidatus (Torr.) Wood. Prairie Rush-gras^. 



Dry hills. Common. July 20. 

 Sporobolus cryptandrus (Torr.) A. Gray. Dropseed Grass. 



Dry soil. Frequent. June 15. 

 Sporobolus heterolepsis A. Gray. Northern Dropseed. 



Prairies. Occasional. 

 Cinna arundinacea L. Wood Reed Grass. 



Woods. Occasional. 

 Agrostis alba L. Redtop. 



Occasionally escaped from cultivation. 

 Agrostis perennans (Walt.) Tuckerm. Thin Grass. 



Woods. Occasional. 

 Agrostis hyemalis (Walt.) B. S. P. Rough Hairgrass. 



Prairies, meadows or dry soil. Common. May 30. 

 Calamovilfa longifolia (Hook.) Hack. Long-leaved Reed 

 Grass. 



Manhattan. Sandhills. 

 Spartina cynosuroides (L.) Willd. Slough Grass. 



Moist ground. Common. Aug. 10. 

 Chloris verticillata Nutt. 



Manhattan. Occasional in dry soil. 

 Schedonnardus panicidatus (Nutt.) Trelease. 



Prairies and dry soil. Frequent. June 20. 

 Bouieloua hirsuta Lag. Small Grama Grass. 



Prairies. Common. July 25. 

 Bouteloua oligostachya (Nutt.) Torr. Larger Grama Grass. 



Prairies, especially in the lower places. Aug. 25. 



