OF ARTS AND SCIENCES. 75 



two to several, usually all peduncled, long and heavy, loosely flowered, erect 

 or nodding : perigynium large, thick in texture, strongly nerved, mostly 

 smooth, usually produced into a long beak which terminates in conspicu- 

 ous awl-like erect or spreading teeth. — Coarse species. 



45. Carex trichocarpa, Muhl. ; Willd. Sp. PI. iv. 302. 



G. striataj Carey, Gray's Man. 1848, 561. 

 C. trichocarpa, var. tiirhinata, Dewey, Sill. Journ. xi. 159. 

 Marshes throughout the States east of the Mississippi, south to 

 Georgia. 



Var. iMBERBis, Gray, Man. 5th ed. 597. 



Perigynium smooth, teeth usually shorter, pistillate scales longer 

 and sheaths scabrous. — New York, Sartwell, to Illinois. Bolander's 

 no. 4689, referred here in Bot. Calif, ii. 251, is probably not this plant. 



Var. Deweyi, Bailey, Bot. Gaz. x. 293. 



C. Iceviconica, Dewey, Sill. Journ. xxiv. 47. 

 Big Sioux and Yellowstone Rivers, Hayden, Bismarck, Dakota, 

 Seymour, and northward. 



Var. aristata, Bailey, Bote Gaz. x. 294. 



C aristata, R. Br. Narr. Frankl. Exp. App. 764. 



C. atherodes, Sprengel, Syst. Veg. iii. 828. 



G. orthostachys, C. A. Meyer, Fl. Alt. iv. 231. 



G. mirata, Dewey, Wood's Bot. 1848, 593. 



G. aristata, var. longo-lanceata, Dewey, Sill. Journ. xviii. 102. 

 Geuerally distributed from New England to Oregon, and far north- 

 ward. 



46. Carex Watsoni, Olney, Bot. King's Rep. 370. 



Culm erect, a foot and a half high : spikes about seven, deep red- 

 brown, the four uppermost staminate, the topmost much the longest : 

 scales of the staminate spikes lanceolate and acute or aristate, hispid, 

 red-brown on the margins, three-nerved and pale in the centre : pistil- 

 late scales lanceolate and abruj^tly aristate, ciliate at the apex : peri- 

 gynium deeply cleft, the teeth spreading and clothed with a few lax 

 hairs. — Founded upon very young and unsatisfactory specimens. I 

 imagine that it is G. riparia. — Washoe Mountains, on a creek bank 

 at the mouth of King's Canon near Carson City, Nevada, alt. 4,500 ft., 

 Watson 1246. 



47. Carex serratodens, W. Boott, Bot. Calif, ii. 245. 



Culm one to two feet high, smooth, leaves a line or two broad, 

 mostly shorter than the stem : bracts leafy, the lowest exceeding the 

 culm, sheathless or nearly so, with purple auricles at the base : spikes 



