North American Cy2)eracece. 409 



85. Carex oxylepis, Torr. ^HooA: 



Spikes 4, slender, rather loosely flowered, subdistant, on 

 filiform peduncles ; the terminal one staminate below ; fruit 

 oblong, acute at each end, subtrigonous, smooth, with a mem- 

 branaceous and minutely 2-lobed orifice, somewhat exceeding 

 the lanceolate cuspidate scale. 



Culm 12 — IS inches high. Leaves narrow, flat, pungenlly acute, 

 nearly as long as the culm, the midrib and margins sparsely hairy, espe- 

 cially on the lower surface. Peduncles filiform, nearly erect ; the lowest 

 about 2 inches long, included in the sheath for the greatest part of its 

 length ; the upper ones shorter, scarcely sheathed. Spikes about an 

 inch in length, 15 — 30-flowered ; the terminal one staminate for more 

 than half its length. Scales lanceolate, scarious, with a green keel, 

 gradually attenuate into a scabrous cusp, which is longest in the lowest 

 flowers. Fruit pale green, obscurely nerved. Stigmas 3. Nut tri- 

 quetrous. 



Hab. Texas, T. Dnnnmovd ! (Texan collection III, no. 

 436.) This species is intermediate between C. graciUima ^ 

 C.formosa ; it more nearly resembles the former, but is quite 

 distinct from either. 



86. C. FORMOSA, Dewey ! car. /. c. 8. p. 98. t. 2. f . 6 ; 

 Schio. ^ Torr. ! car. I. c. p. 325. 



Hab. Massachusetts ! and the Western part of the State 

 of New York ! 



87. C. Davisii, Schw. ^ Torr. ! car. I. c. p. 326. 



C. aristata, Deioey ! car. I. c. 7. p. 277, &; 9. t. 1. f. 1, not of R. 



Brown. 

 C. Torreyana, Derveij ! car. I. c. 10. p. 47. 



Hab. Massachusetts ! and the "Western part of the State 

 of New York! to Kentucky!; Cherokee, Muhlenberg (Herb. 



