lOO UNIVERSITY OF MISSOURI STUDIES [243 



62. ELYMUS L. Lyme grass. 



140. E. striatus Willd. Small wild rye. 



Common on banks of streams and on ledges: a frequent 

 form is glabrous throughout. 

 Maine and Ontario to Tennessee and Kansas. 



140a. E. striatus villosus Gray. 

 Dry and exposed banks. 

 Range of the type. 



141. E. Virginicus L. Terrell grass. 



Fence-rows and stream-banks; common: an infrequent 

 form is remarkably long-awned. 



Nova Scotia to Manitoba and Wyoming; Florida to 

 Texas. 



142. E. Canadensis L. Common wild rye. 

 Banks of streams; common. 



Nova Scotia to Alberta; Georgia to New Mexico; 

 Oregon and California. 



143. E. glaucifolius Muhl. [E. Canadensis glatccifolius 

 (Muhl.) Torn]. Blue wild rye. 



Moist banks; especially frequent at Rock Bridge. 

 Range of the preceding. 



63. ASPRELLA Willd. {_ASPERELLA Humb.: 



//F5rie/XMoench]. 



144. A. Hystrix (L.) Willd. \Aspcrella Hystrix (L.) Humb.: 

 H. Hystrix (L.) Millsp.]. Bottle-brush grass. 



Woodlands and banks; common. 



New Brunswick to Minnesota; Georgia to Texas. 



Family ii. CYPERACEAE J. St. Hil. Sedge family. 



64. DULIOHIUM L. C. Rich. 



145. D. spathaceum (L.) Pers. [Z?. arundinaceum (L.) 

 Britton]. 



Swamp at Brushwood lake. 



Nova Scotia to Nebraska; Florida to Texas. 



