898 North Ainerican Cyiyeracea. 



24. e . De WE YANA, Schw ! aruiL tab. I. c, ; Schw. &f Torr. ! 

 ear. L c. p. 310. 



C. remota, Richardson, in app. FrmM. journ. ed. 2, p. 35. 



Hab. Northern Stales and British America ! ; west to the 

 Rocky Mountains 1 



25. ' C. tenuifloba, Wahl. ; SckuJchr, car. f. 187 ; 

 JDewey / car, L e. 28. p. 273. 



Hab. British America I 



26. C. ELONGATA, Linn. ; SchuMr, car. f. 25 ; Bongard f 

 veg. Siteha, I. c. p. 168. 



Hab. Siteha, Bongardf 



27. C. STBLLULATA, Good. ; SchuJchr, car. f. 14. 



/3. Inflorescence, more or less dioecious ,' the pistillate spikes 

 bearing very few staminate flowers, the staminate spikes more 

 or less pistilliferous. 



C. sterilis, Willd. sp. 4. p. 208 ; ScMuhr, car. f. 146. ; Muhl. I 

 gram. p. 217. 



7, Somewhat smaller ; spikes (especially the uppermost) 

 with numerous staminate flowers, thus becoming clavate. 



C. scirpoides, Schkuhr, car. f. 180; Muhl.! gram. p. 225. 



Hab. Northern and Middle States ! to Arctic America ! 

 west to the Rocky Mountains ! ; Siteha, Bongard! — C. stel- 

 lulata, sterilis and sciriwides are not distinguished from each 

 other by any essential and constant characters ; numerous inter- 

 mediate forms being every where found. C. sterilis certainly 

 differs from the others in its prevailing dioecious habit, or rather 

 in its tendency to become dioecious ; but the pistillate speci- 

 mens usually bear more or less staminate flowers at the base 



