40 



Type specimen in the United States National Herbarinm, collected by F. E, Clements 

 (206), Marshall Pass, Saguache County, Colo., altitude 3,344 meters, 1896. 



Specimens examixkd. — Assinihoia: Park Reg, (Macoun 13101, IJ.G. S. C), 1896. Mon- 

 tana: (F. W. Anderson), 1889; Lima, (Rydberg 2318, 2319), 1895; East Gallatin 

 swamps, altitude 1,520 meters, (Rydberg, 3169), 1896. Colorado: Marshall Pass. 

 (Clements 206), 1896; Alamosa, Conejos County, altitude 2,280 meters, (T. A. 

 Williams 2107, Shear 809, Clements 161), 1896; South Park, (Wolf 581, 1098), 1873. 



Aitproaches some forms of C. netjlnln in its slender culms, narrow, strongly in\oliite 

 leaf-blades and less scabrous empty glumes, but diffcus in its harder texture, 

 more rigid habit, an<l thicker glumes. 



CALAMAG-ROSTI3 HYPERBOREA ELONGATA Kearney, new name. 

 Deyeuxia neglecia rohii-shi \;isey : Macoun Cat. Can., PI. 4: 206 (1888). 



Less strongly caispitose and less rigid tlian C hypcrhorca, with fewer innovations; 

 taller (7 to 12 dm. high) culms, less closely envelo])ed at base by the marcesceut 

 sheaths and wdth usually 4 iuteruodes; longer (sometimes 6 dm. long), laxer, 

 not rarely flattened leaf-blades; longer (10 to 20, usually 12 to 15 cm. long), often 

 more interrupted, but sometimes very dense panicle with the longest branch 

 sometimes 6.5 cm. long; usually smaller spikelets (3 to 4, commonly 3.5 mm. 

 long) ; .and often less pointed empty glumes. 



Ontario to British Columbia, south to Pennsylvania, Michigan, Colorado, and Cali- 

 fornia. 



Type specimen in the United States National Herbarium, collected by P. A. Rydberg 

 (1494), Plummer Ford, on the Dismal River, Plnmmer County, Nebr., 1893, 



Specimens KWMiSEU.—Peunsyhania: (F. Peck). Ontario: Shore La,k(> Huron 

 (Macoun 17395 II. G.S.C.), 1871; Elziver North Hastings (Macoun 17397 H. G. 

 S. C), 1878; Belleville (Macoun 55), 1878. Michigan : Isle Royale ( Porter) 1865; 

 Thunder Bay Island, Alpena County (Wheeler), 1895. Wisconsin : Shore Lake 

 Michigan (Schuette), 1887; valley Wisconsin River, :Merrill (Cheney 2799), 1895. 

 Minnesota: Fort Suelliug (.Jarvis) ; St. Cloud (Campbell), 1887. Manifol'd : Lake 

 Winnipeg (Richardson) ; Brandon (Macoun 13112 H. G. S. C), 1896. Sorth Dakota: 

 Sheyenne River prairies (Nicollet), 1839; AVillow City, Bottineau County, alti- 

 tude 156 meters (Branuon 76), 1896. South Dakota: Hot Springs, Black Hills, 

 altitude 1,064 meters (Rydberg 1128, 1129), 1892; Brookings, Prookiiigs County, 

 altitude 425 meters (Wilcox 62), 1896; Aberdeen (Gritliths 9")), 1896. Nebraska: 

 Norway, :Middlc Loup River, Thomas County (Rydberg 1409 in part). 1893; 

 Mullen, Middle Loup River, Hooker County (Rydberg 1109 in part, 1.557) 1893; 

 Plummer Ford, Thomas County (Rydberg 1494), 1893; Thedlbrd, Disnjal River, 

 Thomas Ccuuity (K'ydberg 1126), 1893; (.'cntral City (Shear 266, Ry<ll)erg 2008), 

 1895; North Platte (Shear 275, Rydberg 2022). 1895. Northwest 'lerritory: (.LM. 

 Macoun 17396 H. G. S. C), 1883. Assinihoia: Plains (Douglas 239,240); Indian 

 Head (Macoun 13100 H. G. S. C), 1895. Saskatchewan : Carlton (Macnin 17367 1 1. 

 G. S. C), 1875; Prince Albert (Macoun 13108), 1896. Montana : Tenderfoot Creek 

 (R. S.Williams 846), 1890; Box Elder Creek (R. S.Williams 597), 1887; Man- 

 hattan (Shear 421, Rydberg 2191), 1895; Madison River (Shear .522), 1895; Castle 

 (Rydberg 32.54), 1896; swani]».s, E.ast (iallatin, altitude 1,520 meters (Rydberg 

 3179, 3181), 1896; Sheep Creek (Rydberg .3309), 1896; Spanish Creek IJasiniT.A. 

 Williams 2072), 1896; Logan (Shear 503), 18t)5. Wyomintj : Laramie (Nelson 

 1179), 1894; (Evermann), 1893. Colorado: Yeta Pass (Vasey), 1886; Twin LaUes 

 (Wolfe 801, 1101), 1873; Fort Garland, Costilla Connty, altitude 2,432 meters 

 (Vasey), 1884, ((.'lemcnts 145), 1896; (iunnison County, aititudt; 2,432 meters 

 (Cowen528), 1892; Florissant (T. A. Williams2140, 2148), 1896; Colorado Springs, 

 altitude 1,824 meters (T. A. Williams 2128), 1896. Alberta: Fdmonston (Maconn 

 43, 17365 H.G. S.C), 1872; Sand Hills (.M.acoun 17399 H.(;.S.C.). 1879. Utah: 

 Kvanstou.altitiulc 1,S21 meters (Watson). 1S69; Salt Lake Valley, altitu.le 1,300 

 meters (Watson 1290 ill part). 1869; < 'g.lcn i Tr.icy :;il, 342), 1887. Srvada : West 



