39 



oblong, bidentate with obtuse toetb. Authors Tiearly 2 mm. long, ("allns-hairs 

 rather copious, rather stiff, bright-white, the bmger one-third shorter than to 

 nearly equaling the flowering glume. Prolongation of the rachilla, with its 

 hairs nearly equaling the flowering glume. 



Labrador. 



Type specimen in the United States National Herbarium, collected at IJoiinc Esper- 

 ance, Labrador, by J. A. Allen (18), July 29, 1882. 



Specimens f.xamined.— Labrador : Bonne Esperance (J. A. Allen IS), 1882; Fox 

 Harbor, lat. 52^ 22' (J. A. Allen), 1882. 



Related to C. hyperhorea, diflering in its small size, slender, much interrupted 

 panicle, thicker nearly glabrous empty glumes, and short awns. 



37. Calamagrostis hyperborea Lange, Fl. Dan. 50: t. 3 (1880); Consp. Fl. Groeul., 

 160 (1880). C. stricta rohista Yiisey iu Rothr. ; Wheeler Rep. 6: 285 (1878), not 

 C. rohmta C. Muell. C. rohiista Vasey, Monog. Grasses U. S., Contr. U. S. Nat. 

 Herb. 3: 82 (1892). 



Greenland to Alaska, south in the mountains to Vermont, Colorado, Arizona, and 

 California. 



Type specimen collected at Igaliko. near .Tulianehaab, southern Greenland, by I. Vahl. 



Specimens e.vamixed. — GrccnlawA : Kiugua, Tunugdliarlik Fjord, (Rosenvinge), 

 1888. Labrador: (Waghorue 17417 H. G. S. C), 1892. Newfoundland: Grand 

 Lake,(Waghorne 43), 1896. Quebec: Bescie River, Anticosti Island, (MaconnlO, 

 17409 H. G. S. C), 1883. Ontario : Northeast coast Lake Superior, (Macouu 158), 

 1869. Rupert Land: Lake Mistassini, (J. M. Macouu 47, 17410 11. G. S. C), 

 1885. I'ermont: Willoughby Lake, (W. Boott), 1862. Manitoba: Brandon, 

 (Macoun 13112 H. G. S. C), 1890. Saskatrhewan : (Bourgean), 18.57-18.59. Mon- 

 tana: Deep Creek, altitude 1,368 meters (Scribner 359), 1883; Fort Logan, Belt 

 Mountains, (Scribner 36.5a), 1883; (Tweedy 1020), 1886; Townsend, (Shear 393, 

 398, 406; Rydberg 2154), 1895. Wyomimi : Fort Bridger, (Porter), 1873; East 

 Fork, Yollowstouo Park, altitude 2,432 to 2,736 meters, (Tweedy 583), 1885; 

 (Knowlton), 1888. Colorado: Twin Lakes, (Wolfe 1099, 1100), 1873, type of C. 

 stricta robiista Vasey; Democrat Mountain, Georgetown, altitude 2,500 meters, 

 (Jones 472), 1878; Steamboat Springs, Routt County, (Eastwood 6A), 1891; 

 Georgetown, (Shear 646), 1895. Alberta: Morley, (Macouu 55), 1885; Banff", 

 (Macoun 114.54 H. G. S. C), 1891. Idaho: Wheeler's expedition, 1871. Utah: 

 Lookout Mountain Basin, (H. Engelmann), 1858-59; Fish Lake, altitude 2,736 

 meters, (Jones 5785), 1894, Arizona: Willow Springs, (Palmer 616), 1890. 

 Alaska: Unalaska, (Kellogg 154), 1871-72. Northwest Territory: Fort Pelly 

 Banks, (Dawson 97, 17405 H. G. S. C), 1887. British Columbia: Spences Bridge, 

 (Macoun 17400 H. G. S. C), 1889; Shuswap Lake, (Macoun, 17404 H. G. S. C), 

 1889; Deer Park, Lower Arrow Lake, (Macoun 174044 II. G. S. C), 1890; Ains- 

 worfch, Kootanie Lake, (Macoun 17406), 1890. Washinfiton : Cascade Mountains 

 (Dr. Cooper). Oregon: Union County, (Cusick), 1879. California: llniiil.oldt 

 County, (Kellogg and Harford 1090), 1868-69. 



Variable in size of the spikelets, comjiarativc length of the glumes, length and posi- 

 tion of the awn, length of the callus Iiairs, etc., but rather constant and well 

 defined in aspect and in the characters of the organs of vegetation. An imper- 

 fect specimen from Alaska, collected by Applegate, apparently referable to this 

 species, has a rather loosely flowered panicle, spikelets fully 6 nun. long and 

 long-acuminate empty glumes. It may possibly be a hybrid with C. lanysdorjfii. 



CALAMAGROSTIS HYPERBOREA STENODES Kearney, var. n. 



Low, nsually about 4 dm. high, with strongly c;espitose, slender, rigid culms, closely 

 enveloped at base by the niarcescent sheaths; narrow, strongly involute, rather 

 rigid leaf-blades; strict, spile-like panicles 5 to 10 cm. long and about 1 (some- 

 times onlyO. 5) cm. wide; smaller spikelets (mostly 3 to 3.5 mm. long), usually 

 less scabrous empty glumes. 



Assiniboia to Colorado. 



