North American Cyperacea. 391 



Hab. /?. throughout the Northern and Middle States ! and 

 British America ! 7. Cherokee country, Mnhlejiberg; Michi- 

 gan, Dr. Folwell ! — The var. /3. is by far the most common 

 form in this country ; and we have even met with no speci- 

 mens exactly corresponding with C. imnkidata of Europe. 

 Our specimens of the var. 7. are not mature ; but it seems 

 hardly to be a distinct species. 



f t Staminate and pistillate flowers variously situated. 



20. C. siccATA, Dewey! car. I. c. 10. p. 268 ; t. F. f. 18. 



Hab. Connecticut! Massachusetts! Columbia river ! and 

 Cumberland House! — Near C. intermedia, Good., but distinct. 

 The nut of this species is flat on one side, and obtusely angled 

 on the other. 



21. C. BROMOIDES, SchJcuhr, car. 2. p. 8. f. 176. 



Hab. Throughout the United States and British America ! 

 west to the Rocky Mountains ! — Nut flat on one side, obscurely 

 angled on the other. 



+ t + Pistilliferous at the summit. 



22. C. loliacea, Linn. ; Willd. sp. 4. p. 337. 

 C. tenella Schkuhr, car. f. 104. 



Hab. British America ! 



23. C. TRISPERMA, Dewey ! car. I. c. 9. p. 63. t. f. 12. 



C. quaternaria, Spreng. syst. 3. p. 330. 



Hab. Northern States and British America ! Rocky Moun- 

 tains ! 



Vol. m. 50 



