114 MINNESOTA BOTANICAL STUDIES. 



Minnesota: Throughout; frequent; roadsides and banks. 



Minn, specimens in herb.: Taylor 762, Glenwood; Ballard 

 578, Crystal Lake, Scott county; Ballard 765, Waconia; Sand- 

 berg 591, Red Wing; Oestlund 338, 339, Minneapolis. 



Elymus canadensis Linn, forma crescent! us n. f. Nodding 

 Wild Rye. 



Robust, glaucous or pubescent throughout; stems 8 to 12 dm. 

 in length, erect or nearly so; leaves 4 to 6 dm. in length; sheaths 

 striate, ridged; blades coarse and thick, 10 to 20 mm. broad; 

 iri florescence 2 to 3 dm. in length, dense, thick, nodding or flex 

 uous; glumes all hairy with long awns 5 to 10 cm. in length, 

 curved or spreading. 



North America: Minn., S. D. to western Neb. 



Minnesota: Southwestern part of the state; abundant; road- 

 sides and meadows. 



Minn, specimen in herb.: Sheldon 1120, Springfield. 



Elymus virginicus Linn. Sp. PI. 84. 1753. Wild Kye. 



Hordeuvi cartilagineum Moench, Meth. 199. 1794, 

 Elymus durus Hedw. ex. Steud. Norn. Ed. ii. 1: 550. 1840. 



Perennial; sterns 5 to 12 dm. in length, smooth, erect; leaves 

 2.5 to 4 dm. in length; sheaths smooth or somewhat roughened, 

 generally shorter than the blades; blades 6 to 12 mm. broad, 

 flat, scabrous both above and below; inflorescence 7 to 14 cm. in 

 lecgth, strict, dense, the lower spikelets often included in the 

 sheath of the uppermost leaf; spikelets 1 to 2 cm. in length, 2 or 

 3 flowered; emj'yty glumes 3 to 5 nerved, scabrous, linear-lan- 

 ceolate, acuminate, with awns 1 to 5 or 10 mm. in length; 

 fiowering glumes lanceolate, rounded on the back, 'usually some- 

 what 3 nerved at the tip, rough or scabrous, with awns 5 to 10 

 and occasionally even 25 mm. in length. 



North America: N. S., N. Br., Q., Ont., L. Superior to Man.; 

 S. toN. E., N. J. and Fla. ; W. to Minn., Neb.; Kan., Mo. and 

 Ark. 



Minnesota: Throughout; frequent, borders of lakes and 

 streams. 



Minn, specimens in herb. : Oestlund 337, Minneapolis; Bailey 

 265, St. Louis River; Ballard 389, Jordan, Scott county; Shel- 

 don 3690, Fergus Falls; Sandberg, Red Wing; Foote 7, Worth - 

 ington. 



Elymus yirginicus Linn, forma jejunus n. f. Small 

 Wild Rye. 



Slender; stems 3 to 6 dm. in length, erect; leaves 1 to 2 dm. 

 in length; blades 2 to 5 mm. broad, flat, scabrous or rough both 



