206 METASPERMAE OF THE MINNESOTA VALLEY. 
Minn. valley: Throughout; wet places, edges of pools 
and lakes, in the water. 
Hers.: Sheldon 881, Sleepy Eye; Herrick 257, Minne- 
apolis; Herrick 258, Minneapolis; Oestlund 159, Hennepin Co.; 
Oestlund 160, Hennepin Co.; Herb. Sheld. 1674, Minneapolis. 
Polygonum hartwrightii Gray, Proc. Am. Acad. VIII, 
294 (1870). 
Wats. and Coult., Gray’s Man. 6 ed. 441; Britt., Fl. N. J. 209; Webb., 
Fl. Neb. 112; Mac., Fl. Can. I, 410; Wats., Fl. Calif. II, 14; Upham, Fl. 
Minn. 119; Coult., Fl. Colo. 320; Greene, Fl. Fran. 136. 
North America: Anticosti, Ont. to Hudson Bay and 
Owen Sound; S. to N. Eng. and N. J.; W. to Minn., Iowa, Neb., 
Utah, California and Pac. coast. 
Minn. valley: Throughout; moist banks and shores. 
and around pools. 
HerRB.: Taylor 224, Janesville; Sheldon 648, Waseca; 
Sheldon 988, Sleepy Eye; Oestlund 161, Hennepin Co.; Bailey 
417, Long lake. 
Polygonum emersum (MicHx.) Brirr. Cat. N. J. 209 (1890). 
. bistorta WALT. Fl. Gar. 131 (1788) not Linn. 
. amphibium var. terrestre WILLD. Spec. II (1799). 
. amphibium emersum Micux. FI. N. Am. I, 240 (1803). 
. coccinneum terrestre MUHL. Cat. 40 (1813). 
. amphibium var. (?) muhlenbergit MEISN. Mon. Polyg. (1856). 
muhlenbergit S. WATS. Proc. Am. Acad. Sci. XIV (1879). 
. terrestre B.S. P. Cat. N. Y. (1888). 
Wats. and Coult., Gray’s Man. 6 ed. 441; Britt., Fl. N. J. 209; Upham, 
Fl. Minn. 119; Mac., Fl. Can. I, 410; Wats., Fl. Calif. II, 13; Coult., Fl. 
Colo. 320; Mac., Fl. Can. II, 353; Roth., Wheel. Exp. 232; Webb., Appx. 
Neb. 27; Greene, Fl. Fran. 137. 
North America: Prairie regions of Can. to Saskatch- 
ewan and Brit. Col.; S. to N. Eng., Fla. and Miss.; W. to Wash- 
ington, Oregon, Calif. and Tex. 
Minn. valley: Throughout; wet places; sandy beaches. 
and shores of streams. 
Herz.: Sheldon 1192, New Ulm; Sheldon 1396, Lake 
Benton; Taylor 1073, Glenwood; Leiberg 56, Blue Earth Co.; 
Herrick 259, Minneapolis; Bailey 366, Mud river; Sandberg 
482, Red Wing; Herb. Moyer 214, 215, Chippewa river, near 
Montevideo. 
Polygonum amphibium Linn. Spec. 361 (1753). 
P. purpureum Giuip. Exerc. Phyt. II, 433 (1792). 
P. amphibium var. aquaticum WILLD. Spec. IT, (1799). 
P. coccinneum MunuL Cat. 40 (1813). 
Persicaria amphibia 8. KF. Gray, Arr. II, 268 (1821). 
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