330 Monograph of North American Caries. 



60. Carex Richardsonii, R. Brown. 



C. spica sterili pedunculata ; fertilibus binis, alternis, subses- 

 silibus, approximatis, exsertis, multifloris ; fructibus obtu- 

 sis, pubescentibus ; culmo scaberrimo ; foliis rigidis. 



C. Richardsonii, R. Brown, in Richard, app. Frank, ed. 2. 

 p. 35. 



Culm about 6 inches high, subterete, clothed with purplish-brown sheaths 

 above the middle, deeply channelled and very scabrous to the base. 

 Leaves growing in a dense tuft about the root, rigid, and apparently re- 

 curved, smooth; those of the culm very short, with purple sheaths. 

 Sterile spikes on a peduncle half an inch long, glumes ovate, rather ob- 

 tuse, brown, with a white border. Fertile spike on short peduncles, 

 which are included in large oblong brown bractece, with broad membra- 

 naceous borders ; glumes ovate, acute, brown. Fruit ovate, pubescent, 

 with the orifice apparently entire. 



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

 ardson. 



Obs. Our specimens of this Carex, which we received from 

 its discoverer, are not sufficiently mature for examining 

 satisfactorily its fruit : it appears, however, to be a very 

 distinct species. 



61. Carex concinna, R. Brown. 



C. spica sterili sessili, cylindracea ; fertilibus ternis, subsessili- 

 bus, approximatis ; bracteis semimembranaceis ; fructibus 

 trigono-obovatis, brevissime rostellatis, pubescentibus, 

 glumis obovatis duplo fere longioribus. 



C. concinna, R. Brown, I.e. p. 35. 



Culm about 4 inches high, filiform, leafy at the base, triquetrous, smooth. 

 Leaves rigid, subradical, numerous, smooth, spreading. Sterile spike ob- 

 long, on a very short peduncle ; glumes broad-ovate, obtuse ; the lower 

 ones slightly ciliate on the margin. Fertile spikes subsessile, 3 — 4-flow- 

 ered, approximate ; glumes roundish-ovate, brown, about half the length 

 of the fruit, obtuse. Fruit hispklly pubescent ; orifice bidentate. 



Hab. In the woody region and barren grounds of Arctic 

 America. Dr Richardson. 



