Monograph of North American Carices. 297 



ing convolute when dry, somewhat scabrous. Spike solitary, oblong- 

 linear, with 4—8 sterile florets at the summit: staminiferous glumes 

 oblong-, obtuse, or rather acute, greenish, with a broad margin, some- 

 what carinate : fertile florets about 5 ; glumes ovate, carinate, mucro- 

 nate, the lowest one often elongated, but scarcely foliaceous. Fruit 

 obtusely triquetrous, oblong, slightly nerved and smooth ; stigmas brown. 



Hab. On dry hill sides and in bogs. Flowers in May; 



rather common. Canada to Pennsylvania. Not hitherto 



found in the Southern States. 

 Obs. C. Willdenomi, Dewey, 1. c. ix. p. 258. is a variety 



of this plant. 



7. Carex affinis, R. Brown. 



C. spica simplici, pauciflora, laxa ; glumis lanceolatis, acutis, 



muticis, infima aristata ; foliis planis. 

 C. affinis, R. Brown in Rich. app. Frank, nar. ed. 2. p. 



35. No. 367. 



Culm 6 inches high, triquetrous, leafy at the base, somewhat scabrous. 

 Leaves one line broad, filiform at the apex, shorter than the culm. Spike 

 half an inch long, oblong; summit sterile, obtuse, as broad as the in. 

 ferior fertile part : glumes loosely imbricated, fuscous, with a scabrous 

 discoloured margin : fertile flowers about 5 ; glumes resembling those of 

 the sterile florets, the lowest one produced into a cusp or short bristle. 

 Fruit — 



Hab. In the woody region of Arctic America. Dr. Rich- 

 ardson. 



Obs. This species is allied to C. polytrichoides, but differs 

 in its obtuse loose-flowered spike and fuscous glumes. The 

 fruit is immature in Dr. Torrey's specimen, which was re- 

 ceived from Dr. Richardson. 



8. Carex attenuata, R. Brown. 



C. spica simplici ; superne staminifera densa ; pistilliferis 

 paucioribus alternis ; glumis omnibus obtusis. 



C. attenuata, R. Brown in Rich. app. Frank, nar. ed. 2. 

 p. 35. No. 368. 



