162 TWELFTH ANNUAL REPORT, 



BRACK YELYTRUM, Beauv. Brachyelytrum. 



B. aristatuni, Beauv. Brachyelytrum. 

 Lapham. Blue Earth county, Leiherg. 



DEYEUXIA, Clarioj. (Included in Calamagrostis, Gray's Manual.) 

 Reed Bent-Grass. 



D. Canadensis, Beauv. Blue- Joint. 



Common throughout thes^ate. The principal grass of the natural meadows bor- 

 dering streams in the wooded region northward, supplying an abundance of excellent 

 hay for the logging teams of the pineries. 



D. stricta,Trin. Reed Bent-Grass. 



Throughout the state. Collected in Minnesota by jyicolle((TFatso?i) ; Ramsey and 

 Hennepin counties, Ocstlund ; Minneapolis, Simmons ; Blue Earth County, Leiherg ; 

 Emmet county, Iowa (common), Cratty ; Pembina, Havard. 



D. L(ai)ponica, Kunth. (Calamae:rostis Lapponica, Trin., in Addenda of 

 Gray's Manual.) Reed Bent- Grass. 

 Isle Koyale, lake Superior, Prof. T. C. Porter; doubtless also in northern Minnesota. 



I>. conliuis, Nutt. Reed Bent-Grass. 



Lapham. Common in Grant county and the Red River valley, Upham. 



D. Nuttalliana, Sfceud. Reed Bent-Grass. 



Lapham. Lake Winnibigoshish, Houghton; Minneapolis, Kassube. 



AMMOPHILA, Host. (§§ 2 and 3, Calamagrostis, Gray's Manual) 

 Reed Bent-Grass. 



A. longifolia, Benth. (C lonofifolia, Hook.) Reed Bent-Grass. 



Throughout the state. Ramsey county, Uesthmd; Sdint Fa,u], Kelley; Minneapolis, 

 also northwestward (common on the beaches of lake Agasslz), Upham-^ Blue Earth 

 county, Leiberg. 



A. arundinacea. Host. (C. arenaria, Roth.) Sea Sand-Reed. 



Common on southern beaches of lake Superior, Whitney; doubtless also on the 

 shore of this lake in Minnesota. 



ORYZOPSIS, Michx. Mountain Rice. 



O. melanocarpa, Muhl. Mountain Rice. 



Lapham. Ramsey county, OeA-fhtncI; Minneapolis, Simmons; Blue Earth county, 

 Leiberg. 



O. asperifolia, Michx. Mountain Rice. 



Throughout the stste, excepting perhaps far southward. Lapham. Stearns 

 county, Oarrison; Minneapolis, Simmons. 



O. Canadensis, Torr. Mountain Rice. 

 Lapham. Infrequent. Range like the last. 



and lacerate ; panicle 4 to 6 inches long, purplish; glumes tapering to a very acute 

 cuspidate point, with a t.trong green midrib ; perianth clothed at the base with whitish 

 hairs, which are nearly half as long as the valves ; valves nearly equal ; awn a little 

 tortuous, sometimes longer than the valve ; superior floret often perfect, and maturing 

 its fruit ; when rudimentary, consisting of a mere awn, without any valve. A remark- 

 able species, with the habit of M. glomerata and M. Mexicana. Torrey in Nicollet's 

 Report. 



