LIST OF HIGHER SEED PRODUCING PLANTS. 85 
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. ITI, 84; Coult,, Fl. 
Colo. 863; 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 $18, 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. loeseliti R. and 8. Syst. IIT, 508 (1818). 
Peliopsis perfoliata Rar. Jour. Phys. LXX XIX, 102 (1819). 
Potamogeton crispus DARL. FI. 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., 484; Nym. Fl. Eur.; Led., 
FI. 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, 
Janesville; Taylor 1050, Glenwood; Ballard 449, 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 Scores. Spic. 21 (1771). 
. hybridus PenTAaN. Inst. IT, 289 (1787). 
. gramineus RoTH. Tent. Fl. Germ. I, 74 (1788). 
. palustris TEESD. Trans. Linn. Soc. V, 43 (1800). 
. gramineus var. heterophyllos FRizs, Nov. Fl. Suec. 35 (1828). 
. paucifolius Op. Bohm. FI. 23 (1823). 
. proteus f. heterophyllos CHAM. and ScuuecutT. Linn. II, 20] 
yr 
(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. IT, 84; Chap., Fl. So. St- 
