OF ARTS AND SCIENCES. 147 



B. Ovales, Kuntli, Enum. Plant, ii. 394. ( Cyperoideoe, Tuckerman, Enum. Meth. 

 8.) Spikes tawny or dark, rather large, sometimes crowded; perigynium 

 with a more or less thin or winged margin, which is mostly incurved at 

 maturity, rendering the perigynium concave inside. 



* Perigynium ovate-lanceolate or narrower, willi conspicuous wing-margins. 

 276. Carex siccata, Dewey, Sill. Journ. x. 278. 



G. pallida, C. A. Meyer, Mem. Acad. St. Petersb. i. 215, t. 8. 

 C. Liddoni, Carey, Gray's Man. 1848, 545, uot Boott. 

 C. siccata, var. hispida, Olney, Exsicc. fasc. iv. no. 25. 

 Distinguished by its irregular and indistinct spikes, the lower ones 

 small and all or in part staminate, only the terminal one conspicuous, 

 and by the abrupt contraction of the perigynium just above the 

 achenium. — New England to Illinois, and northward and westward 

 to Colorado, California, and Kamtschatka ; Arizona, Rusby. 

 ^11. Carex Liddoni, Boott, Hook. Fl. Bor.-Am. ii. 214, t. 215. 

 G. adusta, var. congesta, W, Boott, Bot. Calif, ii. 238. 

 This species has been much confounded with others, especially the 

 next. Its erect and thick rusty head and very large and comparatively 

 firm brown perigynium distinguish it. See Coulter's Man. 397 for 

 further characters. — Sixteen-Mile Creek, Montana, Scrihner ; Summit 

 Camp, California, Kellogg ; and along the Columbia, Scolder. 



278. Carex pratensis, Drejer, Rev. Crit. Car. Bor. 24.*^ 

 G. adusta, var. minor, Boott, 111. 119. 



G. adusta, W. Boott, Wheeler's Rep. 277. 

 Distinguished at once from the last by its well-defined spikes, which 

 are silvery brown and more or less narrowed at the base, and by the 

 smaller and very thin translucent green perigynium. Mature heads 

 either erect or nodding. Often distributed for G. Liddoni. I have 

 heretofore referred to that species specimens collected by Macoun and 

 others. — South Park, Colorado, Wolf; Yellowstone Falls, Wyoming, 

 Letterman ; Silver City, Moose Jaw, and Long Lake, British America, 

 Macoun ; Saskatchewan and L. Winnipeg, Bourgeau ; N. Minnesota, 

 Bailey ; E. Oregon, Gusick ; and Hood River, Wasco Co., Oregon, 

 Hinder son ; Pic River, Lake Superior, Loving ; Middle Bay, Labrador, 

 Allen ; Greenland. — Commoner than the last. 



* * Perigynium mostly ovate-lanceolate, scale-like, with little distinction between the 

 margin and the body, mostly greenish. 



279. Carex arid a, Schweinitz & Torrey, Monogr. 312. 



G. scoparia, var. Mushingumensis, Tuckermati, Enum. Meth. 17. 



* C. pratensis, Phillippi, Linnaea, xxix. 81, from Chili, being a more recent 

 species, should be known as C. Phillippii. 



