416 North American CyjJtraccce. 



Hab. Arctic America to Kentucky ! west to Missouri ! 

 and the Rocky Mountains ! — Resembles the European C alba 

 in many respects, but certainly a distinct species. 



114. C. CAPiLLAuis, Linn.; SchJcuhr, car. f. 56 ; Schw. 

 ^ Torr.! car. I. c. p.S50. 



Hab. Arctic America, from Greenland to the Rocky 

 Mountains ! 



316. C. SYLVATiCA, Hudson, ji. Angt. p. 411 ; ScJihnhr^, 

 car. f. 101. 



C Drimeja, Linn.f. svpiJ. ; Willd. sp. 4. p. 226. 



Hab. Canada ! and the Northern States ! 



116. C. DEBiLis, Michx. ! fi. 2. p. 172. 



C. tenuis, Rudge, in Linn, trans. 7. p. 96. t. 9. f. 2. 



C. flexuosa, Muhl. in IVUld. sp. 4. p. 296 ; Schkuhr, car. f. 124. 



Hab. British America ! to Louisiana ! — The name of 

 Michaux having been first published, must be restored to this 

 species. 



117. C. VENUSTA, Dewey! car. I. c. 26. p. 107 ; t. T. f. 62, 

 Hab. S. Carolina! to Florida ! 



118. C. PANicEA, Linn. ; Schkuhr, car. f. 100; Dewey! 

 car. I. c. 25. p. 140. 



Hab. Massachusetts ! Supposed to be introduced from 

 Europe. 



119. C. PETRicosA, Dciocy ! car. I. c. 29. p. 246. 



Hab. Summit of the Rocky Mountains, T. Drummond ! 

 — We are inclined to consider the {ev! pistillate flowers at the 

 base of the upper spike as an accidental occurrence, and ac- 

 cordingly place the species in the present section. The spe- 

 cimens are too young for satisfactory determination. 



