162 TWELFTH ANNUAL KEPORT. 



BRACHYEIiYTRUM, Beauv. Brachyelytrum. 



B. arista tuui, Beauv. Brachyelytrum. 

 Lapham. Blue Earth couuty, Leiherg. 



DEYEUXIA, Clarioa. (Included in Calamagkostis, Gray's Manual.) 

 Rr.ED Bent-Grass. 



D. Canadensis, Beauv. Blue- Joint. 



Common throughout the state. 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. 



T>. stricta, Trin. Reed Bent-Grass. 



Throughout the state. Collected in Minnesota by Nicollet (Watson) ; Ramsey and 

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

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



D . Liapponica, Kunth. (Calamagrrostis Lapponica, Trin., in Addenda of 

 Gmy'n Manual.) Reed Bent-Grass. 

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



D. conflnis, Nutt. Reed Bent-Grass. 



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



D. Xuttalliana, Sfceud. Reed Bent-Grass. 



Lapham. Lake Winnibigoshish, Houghton; Minneapolis, Kassuhe. 



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

 Reed Bent-Grass. 



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



Throughout the state. Ramsey county, Oestlund; Saint Paul, Kelley; Minneapolis, 

 also northwestward (common on the beaches of lake Agassiz), Upham; Blue Earth 

 county, Leiberg. 



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



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

 shore of tliis lake in Minnesota. 



ORYZOPSIS, Michx. Mountain Rice. 



O. nielanocariia, Muhl. Mountain Rice. 



Lapham. Ramsey county, OesMimd; Minneapolis, .Simmojis; Blue Earth county, 

 Leiberg. 



O. asperifolia, Michx. Mountain Rice. 



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

 county, Garmo?i," 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 strong green midiib ; 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. 



