298 Monograph of North American Car ices. 



Hab. In the woody country of Artie America. Dr. Rich- 

 ardson. 

 Obs. Of this species we have no specimens. 



9. CAREXJilifoUa, Nuttall. 



C. spica simplici, subcylindrica, acuta ; fructibus subglobo- 

 sis, ore integris ; glumis retusis : foliis involuto-filiformibus, 

 subulatis, recurvis ; arista stricta (exserta vel inclusa.) 



C. filifolia, Nutt. gen. ii, p. 204. Richardson, I. c p. 35. No. 

 366. 



Cespitose. Culm about 6 inches high, clothed at the base with scarious 

 brown sheaths, the lowest of which are finely lacerate, triangular and 

 grooved, leafy at the base. Leaves radical, longer than the culm, filiform, 

 recurved or spreading, slightly scabrous. Spike three fourths of an inch 

 long: superior sterile part consisting of densely imbricated florets; 

 glumes very broad, refuse and somewhat eroded at the summit, browu, 

 with a scarious margin ; fertile florets 6 — 8, loose ; glumes roundish with 

 broad scarious margins. Fruit subpubescent witt.out nerves, shorter 

 than the glume, (not seen in a mature state); orifice a little oblique, 

 scarious. Seed with a short straight awn at the base which is scarcely 

 exserted. Stigmas 2. 



Hab. On the dry plains and gravelly hills of the Missouri. 



Nuttall. In the woody country of Arctic America. Dr. 



Richardson. 

 Obs. Nearly allied to C. petraea, Wahl. 



10. Cabex pauciflora, Lightfoot. 



C. spica subquadriflora ; flora staminifera terminali subsoli- 

 taria ; fructibus lanceolatis, teretibus, reflexis ; glumis pis- 

 tilliferis caducis. 



C. pauciflora, Willi,, sp.pl. iv. p. 211. Schk. car. t. A. f. 4. 



Root fibrous. Culm triangular, a span high, leafy at the base, very smooth. 

 Leaves shorter than the stemg convolute-triangular, the lower ones abbre- 

 viated, with brown sheaths. Spike of about 4 fer tile flowers, and 1 — 3 

 sterile ones at the summit ; sterile glumes linear-lanceolate, brown ; 

 fertile florets alternate on a jointed rachis. Fruit large compared with 



