180 METASPERMAE OF THE MINNESOTA VALLEY. 



P. angulosa MICHX. Fl. N. Am. II, 243 (1803). 

 P. canadensis MICHX. f. Hist. Arb. Ill, 302 (1819). 

 P. macrophylla LODD. Cab. (1836). 



Wats, and Coult., Gray's Man. 6 ed. 487; Britt., Fl. N. J. 227; Mac., 

 Fl. Can. I, 457; Upham, Fl. Minn. 131; Webb., Fl. Neb. 110; Chap., Fl. S. 

 St. 431; Coult., Fl. Colo. 339; Herd., Fl. Eur. Russ. 118; Wats., King. Exp. 

 327; Roth., Wheel. Exp. 242; Cov., Fl. Ark. 221; Engl. Pax, Nat. Pflanz. 

 Ill, 1, 35. 



Introduced into Russia. 



North America: Q., Ont. to Saskatchewan and Assin- 

 iboia and Rockies; S. to W. N. Eng., N. J. and Pla.; W. to 

 Colo. , Kan. , Ind. Terr, and Rocky mts. 



Minn, valley: Throughout; woods, shores of lakes and 

 banks of streams. 



HERB.: Taylor 40, Elysian; Sheldon 1580, Lake Ben- 

 ton; Taylor 632, Minnesota lake; Sheldon 449, Madison Lake, 

 Blue Earth Co. ; Holzinger 261, Winona Co. ; Oestlund 181, Hen- 

 nepin Co.; Sandberg 520, Cannon Falls; Herb. Wickersheim 226, 

 Lake Park, Becker Co. 



Populus balsamifera LINN. Spec. 1034 (1753). 

 P. tacamaliaca MILL. Diet. (1768?. 

 P. balsamifera lanceolata MARSH. Arbust. 108 (1785). 

 P. candicans AIT. Hort. Kew. Ill, 406 (1789). 

 P. viminea BON. Jard. 565 (1845). 



P. balsamifera var. genmna WESMAEL, DC. Prodr. XVI, 2, 329 

 (1868). 



Wats, and Coult., Gray's Man. 6 ed. 487; Britt., Fl. N. J. 227; Webb., 

 Fl. Neb. 11Q; Upham, Fl. Minn. 131; Coult., Fl. Colo. 339; Mac., Fl. Can. 

 I, 456; Herd., Fl. Eur. Russ. 118; Wats., King Exp. 327; Roth., Wheel. 

 Exp. 242; Engl. Pax, Nat. Pflanz. Ill, 1, 35; Hart., Fl. Scand. I, 567, 568; 

 Bothr., Alask. 454. 



Introduced in Russia and Scandinavia. 

 North America: Saskatchewan and Man. to Alaska 

 and Mackenzie; N. in Arctic circle; S. to N. Eng., N. J., Mich., 

 Minn. , Neb. and Colo. 



Minn, valley: N. W. edge and N. E. district; sparingly 

 represented; borders of streams and swamps. 



HERB. : Bailey 162, Vermilion lake; Sandberg 52 J, Can- 

 non Falls; Sandberg 522, Agate bay. 



Populus grandidentata MICHX. Fl. N. Am. II, 243 (1803). 

 P. grandidentata var. pendula TORR. Comp. VI. N. St. 375 (1824). 

 Wats, and Coult., Gray's Man. 6 ed. 486; Britt., VI. N. J. 227; Upham, 

 Fl. Minn. 130; Mac., Fl. Can. 456: Chap., Fl. S. St. 431. 



North America: N. S., N. Br., Q., Ont. to N. Car.; W. 

 to N. Minn, and Tenn. 



