70 PROCEEDINGS OF THE AMERICAN ACADEMY 



C. Georgiana, Dewey, Sill. Journ. 2d ser. vi. 245. 



C. Thurberi, Dewey, Bot. Mex. Bound. 232. 

 Wet meadows and marshes throughout the States east of the Mis- 

 sissippi from Canada to Georgia, but evidently inclining to be local ; 

 New Mexico, Wright ; Santa Rita Mts., Arizona, Pringle. — The 

 name was originally written hyslericina, a name of no application. 

 That the author meant to refer to the comose or hystricinous character 

 of the spikes is evident from Willdenow's German name of the plant, 

 no doubt suggested by Muhlenberg, " Stachelschweinartige Segge," 

 porcupine-like sedge. 



28. Carex acutata, Boott, Linn. Trans, xx. 124. 



C.feminea, Steud. Cyper. PI. 203. 

 Much like the last, fi'om which it differs in its greater size (two to 

 four feet high) : pistillate spikes long and thick (one and a half to 

 three inches long), erect, the lowest one or two short-stalked: peri- 

 gynium elliptic-ovate, thick in texture, dull, very prominently many- 

 ribbed, abruptly contracted into a rather short, white nerveless beak, 

 longer than the rough and aristate scale. — 8. Arizona, near Fort 

 Huachuca, Lemmon 2903 (1882). Founded upon South American 

 specimens. 



29. Cakex Pseudo-Cyperus, Linn. Sp. PI. 978. 



Swamps and lakes : New England to Pennsylvania and Michigan ; 

 Portage de Ratz at Fort de la Riviere, Winnipeg, Bourgeau. Evi- 

 dently not common. Europe, Asia, Africa, South America. 

 Var. COMOSA, W. Boott, Bot. Calif, ii. 252. 

 C.furcata, Ell. Sk. Bot. ii. 552. 

 C. Pseudo-Cyperus, Schw. & Torr. Monogr. 355. 

 C. comosa, Boott, Linn. Trans, xx. 117. 

 Common east of the Mississippi, in low grounds, from Canada to 

 Georgia ; Multnomah Co., Oregon, Howell ; near San Francisco, Cal., 

 Bolander 2301. 



E. Squarrosce, Carey, Gray's Man. 1848, 564. Perigynium obconic or obovoid, 

 squarrose in exceedingly dense spikes. 



* Spikes mostly three to six inches long. 



30. Carex spissa. 



Culm four to six feet high, very stout, from a woody root, smooth 

 or nearly so : leaves very numerous, a half-inch wide, stiff, glaucous, 

 conspicuously serrate on the margins, about as long as the culm : 

 lower bract very long and leafy, the uppermost short or nearly obso- 

 lete: spikes 6-12 or more, the lowest four to six inches long and long- 



