403 North American Cyperacct^. 
B. Style Z-cleft ; nut trigonous. — Carex, P. de Beauv. 
1. SpiJcc single, 
* Mostly dioeceoiis. 
57. C. sciRPOiDEA, Michx.! fl. 2. p. 171. 
C. Wormskioldiana, Hornemmin ! Jl. Dan. t. 1528; Schw. Sf Torr. ' 
car. I. c. p. 294. 
C. Michauxii, Schio..' anal. tab. I. c. 
Hab. Arctic America! Greenland, Prof. Home^nami!; 
Rocky Mountains, Dr. Richardson! ; on the White Moun- 
tains of New Hampshire, Mr. Oakes ! — All our specimens, 
even the Greenland one from Hornemann, have a 3-cleft style. 
The name given by Michaux to this species has been drojiped 
on account of its too great resemblance to C. scirjioides ; but 
the latter should have been changed, since C. scirpoidea of 
Michaux was first published. C. scirpoides, Schkuhr, more- 
over, is only a variety of C. stellulata. 
58. C. Drummondiana, Deivey ! car. I. c. 29. p. 251, 
(excl. syn.) 
Hab. Arctic America ! and Rocky Mountains ! 
* * Androgynous, 
t Slaminifcrous at the summit. 
59. C. NIGRICANS, Meyer, in mem. acad. St. Petersb. I. c. 
p. 211. t. 7. 
C. Backana, Detoey ! car. I. c. 29. p. 250. 
Hab. Unalaschka, Meyer ; Arctic America ! and Rocky 
Mountains ! 
