Monograph of North American Caricts. 341 



Obs. This remarkable and distinct species has been found 

 exclusively in the deep New-Jersey swamps, where it is not 

 uncommon, though, growing in such secluded situations, it 

 has seldom been observed. It has much affinity with C. 

 xanthophysa, but it is much more slender, and smaller in all 

 its parts ; the form of the fruit is different, and is always 

 completely in maturity. We have never observed it to be- 

 come yellow in old age. 



74. Carex alpestris, Allioni. 



C. spicis fertilibus tribus, quinquefloris, binis approximatis 

 sessilibus, infima radicali, longissime pedunculata ; fructi- 

 bus obovato-oblongis, triquetris, brevissime rostellatis, sub- 

 pubescentibus, ore obliquo, gluma oblonga sequantibus. 



C. alpestris, Willd. sp. pi. iv. p. 284. Schk. car. t. G. f. 35. 

 Allion pedem. No 2329. Dewey car. 1. c. vii. p. 268. 



C. gynobasis, Schk. car. i. p. 71. Pers. syn. ii. p. N. 141. 



Culm about 6 inches high. 



Hab. On woody hills, Massachusetts. Dewey. 



Obs. The specimens of this plant which we have received 

 from Prof. Dewey, agree exactly with C. alpestris of Eu- 

 rope. 



2. Pistilliferous spikes on exsert peduncles, partly sheathed 

 at the base. 



75. Carex alba, Hsenke. 



C. spica sterili pedunculata; fertilibus geminis ternisque, 

 pedunculatis, subquinquefloris ; fructibus obovatis, rostel- 

 latis, oblique truncatis; bracteis vaginantibus hyalinis 

 aphyllis. 

 '. alba, Willd. sp. pi. iv. p. 253. Schk. car. t. O. f. 55.) 

 JVahl. car. No. 104. Dewey car. vii. p. 266. 



