Deschampsia 



AVENEAE 



123 



50 



Map 199 

 Arrhenatherum elatius (L.) Mert.&Koch 



55-270. DESCHAMPSIA Beauv. Hairgrass 



Blades flat or folded, stiff; awn included or slightly exserted, straight.. .1. D. caespitosa. 



Blades filiform, fiexuous; awn exserted, geniculate, twisted. (See excluded species 



no. 58, p. 1027.) D. flexuosa. 



1. Deschampsia caespitosa (L.) Beauv. Tufted Hairgrass. Map 198. 

 I found this species to be a frequent grass in very marly soil in the outlet of 

 a marly, springy place about 6 miles southwest of South Bend, St. Joseph 

 County, and in a cold, marly, springy place on the border of Mill Creek 

 about a mile north of Mill Creek, La Porte County. Only a few plants 

 were seen at the latter station. Bradner reported this species from Steuben 

 County and his determination was, no doubt, correct, but no specimen has 

 been seen. 



Greenland to Alaska, southw. to N. J., W. Va., Ind., 111., N. Dak., N. Mex., 

 and Calif. 



57-273. AVENA L. O 



AT 



Lemmas pubescent with long, brown hairs. (See excluded species no. 60, p. 1027.) 



A. fatua. 



Lemmas glabrous or nearly so. (See excluded species no. 61, p. 1027.) A. sativa. 



58-275. ARRHENATHERUM Beauv. 



1. Arrhenatherum elatius (L.) Mert. & Koch. Tall Oatgrass. Map 

 199. This is an infrequent escape throughout the state. All of my speci- 

 mens and those that I have seen are from roadsides. Usually not common 

 where it is found although, in a few instances, it was found for a mile or 

 more along roadsides. 



Nat. of Eu. ; Newf. to B. C, southw. to Ga., Tenn., Iowa, Idaho, 

 and Calif. 



