86 PROCEEDINGS OP THE AMERICAN ACADEMY 



76. Carex lenticularis, Michx. Fl. Bor.-Am. ii. 172. 



G. concolor, R. Bi*. Suppl. App. Parry's Voy. 218? 

 O. lenticularis, vars. Alhi-montana and Blakei, Dewey, Wood's 

 Bot. 1860, 755. 

 Labrador, lat. 51|°, Allen, Storer ; N. Maine, Blake, Smith ; "White 

 Mts., Pringle, etc. ; Mt. Mansfield, Vt., Pringle ; Northern New York 

 to N. Michigan, Loring, and Isle Royale, Porter; Saskatchewan, Bour- 

 geau, and northward to Bear Lake, Richardson ; Washington Terr., 

 Lyall; California in the Sierras, Yosemite, Bolander, Silver Lake, 

 Brewer. 



77. Carex acuta, Linn. Sp. PI. 1388. 



C. aperta, var. divaricata, Bailey, Bot. Gaz. ix. 119, in part. 

 Plant pale and mostly very smooth : culm erect, eighteen inches to 

 two feet high, smooth or rough above : sheaths destitute of fibrillose 

 reticulations : leaves flat and thin, about as long as the culm, mostly 

 loose in aspect : the lower one or two bracts flat and leaf-like, about 

 equalling the culm, the margins mostly serrate, often very conspicu- 

 ously so : spikes four or five, the upper one or two staminate, all 

 approximate and erect or very nearly so, all sessile or the lower 

 short-peduncled (one to three inches long, one fourth inch thick) : peri- 

 gynium thin and soft and somewhat inflated, yellowish, granulated, 

 nerved, the small beak entire, broader and either shorter or longer 

 than the dark obtuse or muticous scale. — Oregon, Portland, Kellogg 

 & Harford 1081, Deschutes River, Howell 935, base of Mt, Hood, 

 L. F. Henderson ; Sitka, Mertens, fide Boeckeler ; Greenland, ac- 

 cording to Drejer, probably in some of its boreal varieties if at all. 

 Europe. 



Var. prolixa, Hornem. Plantel. ed. iv. 

 G. prolixa, Fries, Mant. iii. 150. 



Leaves narrower and shorter, not so flat, more rigid : spikes all 

 peduncled or the upper one sessile, the lower more or less cernuous, 

 an inch or inch and a half long and nearly one fourth inch thick when 

 mature : scales very slender and produced into a point which surpasses 

 the more or less ferruginous perigynium. — Oregon, Sauvie's Island, 

 Howell, along the Willamette and Columbia Rivers, Henderson ; bot- 

 tom lands of Columbia River, Klikitat Co., Washington Terr., Suks- 

 dorf. — Although the plant does not agree in all characters with 

 Scandinavian specimens, I refer it here pending the accumulation of 

 more material. This is the " hay carex " of the Columbia. It forms 

 whole meadows, and its second growth produces hundreds of tons of 

 excellent hay. Probably the most valuable plant of the genus. Often 



