210 METASPERMAE OF THE MINNESOTA VALLEY. 
Polygonum scandens Linn. Spec. 363 (1753). 
P. dumetorum var. scandens GRAY, Man. 5 ed. 418 (1868). 
Wats. and Coult., Gray’s Man. 6 ed. 443; Britt., Fl. N. J. 210; Mac., 
Fl. Can. I, 413; Webb., Fl. Neb. 112; Chap., Fl. S. St. 391; Upham, FI. 
Minn. 120; Wats., Fl. Calif. II, 15; Coult., Fl. Colo. 321; Led., Fl. Ross. 
III, 528; Nym., Fl. Eur.; Hook., Fl. Gt. Brit.; Herd., Fl. Eur. Russ. 112; 
Cov., Fl. Ark. 215, 
Europe, eAsia and India—with P. dumetorum Linn. 
North America: N.S., N. Br., Q., Ont.; N. Superior 
region to N. W. T.; S. to Washington and Montana to Colo.; 
E. to N. Eng., N. J., Fla. and Miss. 
Minn. valley: Throughout; moist thickets and edges 
of woods or along shaded banks. 
Hers.: Yaylor 1168, Glenwood; Sheldon 1563, Lake 
Benton; Sheldon 427, Ash lake, Blue Earth Co.; Ballard 506, 
Prior’s lake, Scott Co.; Ballard 630, Chaska; Leiberg 57, Blue 
Earth Co.; Bailey 51, Vermilion lake; Herb. Sheld. 1793, Min- 
neapolis. 
Polygonum cilinode Micux. Fl. N. Am. I, 241 (1808). 
Wats. and Coult., Gray’s Man. 6 ed. 442; Britt., Fl. N. J. 210; Mac., 
Fl. Can. I, 413; Chap., Fl. 8. St. 391; Upham, Fl. Minn. 120. 
North America: N.S8S., N. Br., Q., Ont., Hudson Bay 
and Peace river valley to N. Eng., N. J., N. Car., and W. to 
Mich. and Minn. 
Minn. valley: N. E. district and N. edge; rare or local; 
rocky hills and banks. 
HERB.: Roberts 118, Grand Marais; Roberts 119, Dul- 
uth; Sandberg 484, Vermilion lake. 
Polygonum arifolium Linn. Spec. 362 (1753). 
Wats. and Coult., Gray’s Man. 6 ed. 442: Britt., Fl. N. J. 210; Mac., 
Fl. Can. I, 413; Chap., Fl. S. St. 390; Upham, Fl. Minn. 120; Eng].-Damm., 
Nat. Pflanz. 3, I a, 28. 
Asia? 
North America: N.S., N. Br., Q., Ont.; S. to N. Eng., 
N. J. and S. Car.; W. to Minn. and Mo. 
Minn. valley: Forest district; Blue Earth Co.; rare; 
low, wet woodland. 
HerRB.: Boden 2, Chisago Co. 
Polygonum sagittatum Linn. Spec. 363 (1753). 
P. sagittatum var. boreale MBISN. Mon. Polyg. 65 (1826). 
Wats. and Coult., Gray’s Man. 6 ed. 442; Britt., Fl. N.J. 210; Upham, 
Fl. Minn. 120: Mac., Fl. Can. I, 413; Webb., Fl. Neb. 112; Chap., Fl. S. St. 
390; Led., Fl. Ross. III, 529; Cov., Fl. Ark. 216; Engl.-Damm., Nat. 
Pflanz. 3, I a, 28. 
