Bamaley: revision op Minnesota hordeae. 109 



Agropyroii glauciim (Desf.) R. and S. Syst. 2:752. 

 1817. var occidentale Vas. and Scrib. ex. Mac. Cat. Can. PI. 

 2: 242. 1888. Blue Stem or Blue Joint. 



A. repens Auct. Pluk. 

 Not A. repens (Linn.) Beauv. Essai Agrost. 102. 1812, which is an 

 old world species. 



Perennial, root- stock creeping; stems '6 to 10 dm. in length, 

 ascending or somewhat geniculate, smooth or somewhat 

 roughened; leaves 1 to 3 dm. in length; sheaths roughened or 

 pubescent, or the lower ones often hairy; blades 2 to 6 mm. 

 broad, acute, or acuminate, usually involute, generally glaucous 

 below, scabrous above, margins scabrous; inflorescence 5 to 15 

 cm. in length, strict or slightly curved, never nodding; sjukelets 

 10 to 25 mm. in length, 4 to 10 flowered; empty glumes b to 12 

 mm. in length, lanceolate, acuminate or short awned, glabrous 

 or minutely pubescent, conspicuously 5 (sometimes 3-7) nerved; 

 floiveinng glumes nearly as long, less conspicuously nerved. 



A form with bluish -green flat leaves 4 to 8 mm. broad with 3 

 to 5 flowered spikelets approaches A. tenerum Vasey. Another 

 form has very long flat bluish leaves and spreading 5 to 12 

 flowered spikelets. Numerous forms of A. re/jen.s (Linn.) Beauv. 

 are introduced nearly everywhere, and are easily confounded 

 with this plant. 



North America: N. S., Q., Ont., to Man. and far northward; 

 B. C. Cal.; S. to N. J. and Va.; W. to Kan., Neb. and Utah. 



Minnesota: Throughout; frequent; fields and dry places. 



Minn, specimens in herb: Ballard 316, Belle Plaine; Sheldon 

 1377, Lake Benton; Sheldon 463, Blue Earth county; MacM. and 

 Sheld. 17, Brainerd; Bailey 511, Agate Bay; Sandberg 587, Red 

 Wing; 588, Red Wing; Sandberg 31^0, Cannon Falls. 



Agropyroii (lasystacliyum (Hook.) Scrib. in Bull. Torr. 

 Bot. Club 1 6 : 78. 1883. Wheat Grass. 



Ti'iticum repens Linn. var. dasystachyum Hook. F1. Bor-Am, 



2:254. 1840. 

 Th-iticum dasystachyum A. Gray. Man. ed. I. 602. 1848. 

 A. dasystachyum Vasey. Descr. Cat. Gr. U. S. 96. 1885. 



North America: Ont., Hudson Bay; W. to N. W. T. and 

 Rocky Mts.: S. to Lake Superior, Minn, and Man. 



Minnesota: Infrequent along the northern border of the 

 state. 



