106 MINNESOTA BOTANICAL STUDIES. 



AGROPYRON J. Gaert. in Nov. Comm. Petrop. 14. i. 539, 

 1770. 



Elytrigia Desv. in Bull. Soc. Philom. «: 190. 1810. 

 Eremopyrum Led. F1. Alt. 1: 112. 1829. 

 Braconotia Godr F1. Lorr. Ed. I. 3: 191. 1844. 

 Roegiieria C. Koch, in Linnaea 21: 413. 1848. 

 Heteranthelium Hochst. ex. .Taub. & Spach. PI. Or. 4:24. 1850. 

 Eremopyrum Jaub. & Spach. PL Or. 4: 26. 1850-53. 

 Secaliclium Schur. in Verb. Siebenb. Ver Naturw. 4: 91. 1853. 

 Anthosachne Steud. Syn. PI. Gram. 237. 1855. 

 Crithopyrum Hort. Frag. ex. Steud. Syn. PI. Gram. 344. 18.55. 

 Oostia WiLLK. in Bot. Zeit. 377. 1858. 

 Cremopyrnm Schur. Enum. PI. Transs. 807. 1866. 

 Hayiialdia Schur. 1. c. 



Agropyron caninum (Linn.) Beauv. Essai Agrost. 102. 

 1812. Dog's Couch Grass. 



Triticum caninum Linn. Sp. PI. 86. 1753. 



Elymus caninus Linn. F1. Suec. ed. II 112. 1755. 



Triticum caninum HuDS. Fl. Ang. 58. 1762. 



TnYicum caninum ScHREB. Spicil. Fl. Lips. 51. 1771. 



Triticum sepium Lam. Enc. Meth. 2:536. 1786. 



Festuca nutans Moench. Meth. 191. 1794. 



Agropyrum caninum R. and S. Syst. 2:756. 1817. 



Agropyrum caninum Reichenb. Icon. Fl. Germ. t. 119. 1834, 



Braconotia elymoides Godr. Fl. Lorr. 3:193. 1844. 



Agropyrum pseudo-caninum Schur. in Verb. Siebenb. Ver. Na- 

 turw. 4:91. 1853. 



Triticum oigilopoides A. GnXY. Proc. Acad. Philad. II. 6:1862. 

 non Linn. 



Perennial, from a fibrous root; stems 4 to 12 dm. in length, 

 smooth, geniculate below; leaves 2 to 4 dm. in length; sheaths 

 shiny and glabrous or somewhat roughened, nearly as long 

 as the blades; blades 5 to 10 mm. broad, flat or rarely some- 

 what involute, scabrous both above and below or the lower 

 ones nearly glabrous below; inflorescence 8 to 20 cm. in length, 

 narrow, curved or somewhat nodding; spikelets 12 to 20 mm. in 

 length, 3 to 6 flowered; emjjty glumes 8 to 12 mm. in length, 3 to 

 5 nerved, scabrous or somewhat roughened, lanceolate, acum- 

 inated or short awned; flowering glumes almost as long, nearly 

 smooth or 5 nerved at the tip with awns 2. or more often 10 to 

 20 mm. in length. 



Europe and Northern Asia. 



North America: N.Br., Q., Ont., Saskatchewan, Rocky Mfcs. 

 and B. C; S. to N. Eng. and N. J.; W. to Minn., Colo., Nev. and 

 Cal. 



