LIST OF HIGHER SEED PRODUCING PLANTS. 35 



Minn, valley: Reported from S. central district; prob- 

 ably local. 



Potamogeton amplifolius TUCKERM. Am. Jour. Sci. 2, VI. 



225 (1848). 



Wats, and Coult., Gray's Man. 6 ed. 561; Britt., Fl. N. J. 257; Upham, 

 Fl. Minn. 136; Wats., Fl. Calif. II, 196; Mac., Fl. Can. II, 84; Coult,, Fl. 

 Colo. 363; Chap., Suppl. So St. 652; Cov., Fl. Ark. 228; Webb., Appx. Neb. 22. 



North America: Ont., N. Superior reg., Man. to Van- 

 couver, Oregon and Calif. ; S. to N. Eng. , N. J. and mts. of Ga. ; 

 W. to Minn., Neb., Kan , Ark., N. Mex. 



Minn, valley : Forest district; frequent; lakes and 

 ponds. 



HERB.: Sheldon 318, Madison, Blue Earth Co.; Ballard 

 599, Prior's Lake, Scott Co. ; Ballard 606, Prior's Lake, Scott 

 Co. ; Sandberg 532, Chisago Co. 



Potamogeton perfoliatus LINN. Spec. 126 (1753). 

 P. loeselii R. and S. Syst. Ill, 508 (1818). 

 Peltopsis perfoliata RA.F. Jour. Phys. LXXXIX, 102 (1819). 

 Potamogeton Crispins DARL. Fl. Cestr. 23 (1826). 



Wats, and Coult , Gray's Man. 6 ed. 562; Britt., Fl. N. J. 258; Upham, 

 Fl. Minn. 137; Mac., Fl. Can. II, 85; Wats., Fl. Calif. II, 197; Chap., Fl. So. 

 St. 446; Coult., Fl. Colo. 363; Hook., Fl. Gt. Brit, 434; Nym. Fl. Eur.; Led., 

 Fl. Ross. IV, 27; Trautv., Fl. Sib. 113; Richt., PL Eur. 13; Herd., Fl. Eur. 

 Russ. 124; Engl., Ascherson, Nat. Pflanz. II, 1, 207; Wats., King Exp, 337; 

 Roth., Wheel., Exp. 268?; Hart., Fl. Scand. I, 434. 



Europe; all Russia and Siberia; N. Africa; Australia. 

 North America: N. S., N. Br., Anticosti, Q., Ont., to 

 valley of Slave river, N. W. T.; S. to N. Eng., N. J., Fla.; W. 

 to Minn. , Iowa and Colo. ? 



Minn, valley: Throughout; abundant; ponds and lakes. 

 HERB.: Ballard 601, Prior's Lake, Scott Co.; Ballard 

 865, Page Lake, Carver Co.; Taylor 67, Elysian; Taylor 140, 

 Janes ville; Taylor 1050, Glenwood; Ballard 44.9, Prior's Lake, 

 Scott Co. ; Sheldon 440, Buffalo Lake, Waseca Co. ; Oestlund 185, 

 Minnehaha; Herrick 284, Minnetonka; Roberts 125, Knife river; 

 Herb. Sheld. 1752, Lake Johanna, Ramsey Co. 



Potamogeton heterophyllos SCHREB. Spic. 21 (1771). 

 P. hybridus PENTAGN. Inst. II, 289 (1787). 

 P. gramineus ROTH. Tent. Fl. Germ. I, 74 (1788). 

 P. palustris TEESD. Trans. Linn. Soc. V, 43 (1800). 

 P. gramineus var. fieteropfiyllos FRIES, Nov. Fl. Suec. 35 (J828j. 

 P. paucifolius OP. Bohm. Fl. 23 (1823). 



P. proteus f. heterophyllos CHAM, and SCHLECHT. Linn. II, 201 

 (1827). 



Wats, and Coult., Gray's Man. 6 ed. 561; Britt., Fl. N. J. 257?; Upham, 

 Fl. Minn. 136; Coult., Fl. Colo. 363; Mac., Fl. Can. II, 84; Chap., Fl. So. St- 



