402 North American Cyperacea. 



B. Style 3-deft; mit trigonous. — Carex, P. de Beauv. 



1. Spike single. 

 * Mostly clioeceous. 



57. C. sciRPOiDEA, Michx.! jl. 2. p. 171. 



C. Wormskioldiana, Hornemann ! jl. Dan. t. 1528 ; Sch^v. Sf Torr. ' 



car. I. c. p. 294. 

 C. Michauxii, Schio.I anal. tab. I. c. 



Hab. Arctic America! Greenland, Trof. Hornemann'.; 

 Rocky Mountains, Dr. Richardson! ; on the White Moun- 

 tains of New Hampshire, Mr. Oalces ! — All our ;;pecimens, 

 even the Greenland one from Hornemann, have a 3-cleft style. 

 The name given by Michaux to this species has been dropped 

 Ofl account of its too great resemblance to C. scirjpoides ; but 

 the latter should have been changed, since C. scirpoidea of 

 IVIichaux was first published. C. scirpoides, SchTcuhr, more- 

 over, is only a variety of C. stelhdata. 



58. C. Drummondiana, Deivey ! car. I. c. 29. p. 251. 

 (excl. syn.) 



Hab. Arctic America ! and Rocky Mountains ! 



* * Androgynous. 

 t Staminiferous al the summit. 



59. C. NIGRICANS, Meyer, in mem. acad. St. Petersb. I. c. 

 p. 211. t. 7. 



C. Backana, Dewey ! car. I. c. 29. p. 250. 



Hab. Unalaschka, Meyer ; Arctic America ! and Rocky 

 Mountains ! 



