LIST, OF HIGHER SEED-PRODUCING PLANTS. 209 



Polygonum aviculare LINN. Spec 362 (1753). 

 P. centinodium LAM. Fl. Fr. Ill, 237 (1793). 

 P. geniculatum Pom. Enc. Meth. VI, 147 (1804). 

 P. provinciate KOCH, Linn. XXII, 204 (1848). 



Wats, and Coult., Gray's Man. 6 ed. 439; Britt., Fl. N. J. 210; Upham, 

 Fl. Minn. 119; Mac., Fl. Can. I, 407; Webb., Fl. Neb. 112; Coult., Fl. Colo. 

 318; Chap., Fl. S. St. 390; Brew, and Wats., Fl. Calif. II, 11; Miyabe., Fl. 

 Kur. 257; Led., Fl. Ross. Ill, 531; Nym., Fl. Eur.; Trautv. Fl. Sib. 101; 

 Hook., Fl. Gt. Brit. 346; Herd., Fl. Eur. Russ. 112; Roth., Wheel. Exp. 

 5, 230, 373; Wats., King Exp. 315; Cov., Fl. Ark. 215; Hart, Fl. Scand. I, 

 333; Engl. Damru. Nat. Pflanz. 3, I, a, 29; Rothr., Alask. 453; Greene, Fl. 

 Fran. 133. 



All Europe; all Russia and Siberia to Japan and Kurile 

 Isls. 



North America: Greenland to Alaska and S. to Calif, 

 and Ga ; indigenous west of the Mississippi. 



Minn, valley: Throughout; door yards, roadsides, 

 fields and banks. 



HERB.: Sheldon 1558, Lake Benton; Sheldon 1011, 

 Sleepy Eye; Bollard 524, Cleary's lake, Scott Co.; Sandberg 

 482, Red Wing; Roberts 116, Grand Marais; Kassube 208, 

 Minneapolis; Holzinger 198, Winona Co.; Herb. Sheld. 1670, 

 Minneapolis; Herb. Wickersheim 112, Idlewild, Lincoln Co. 



Polygonum yirginianum LINN. Spec. 360 (1753). 

 P. muticum MOENCH, Suppl. 266 (1802). 

 Persicaria virginiana GAERTN. Fruct. II, 180 (1791). 

 ? Antenoron racemosum RAF. Fl. Lud. 28 (1817). 



Wats, and Coult., Gray's Man. 6 ed. 442; Britt., Fl. N. J. 209; Webb., 

 Fl. Neb. 112; Mac., Fl. Can. I, 413; Upham, Fl. Minn. 119; Chap., Fl. S, 

 St. 390; Cov., Fl. Ark. 216; Engl.-Damm., Nat. Pfl. 3, I a, 28. 



North America: N. S. to Ont. ; S. to Fla.; W. to Minn., 

 Neb. , Ark. and Mo. 



Minn, valley: S. central district; thickets and moist 

 woodland. 



HERB.: Sheldon 288, Madison Lake, Blue Earth Co. 



Polygonum articulatum LINN. Spec. 361 (1753). 



Polygonella articalata MEIS^. Gen. II. 228 (1843). 

 Wats, and Coult.. Gray's Man. 6 ed. 443; Britt., Fl. N. J. 210; Upham, 

 Fl. Minn. 119; Mac., Fl. Can. 409; Cov., Fl. Ark. 215. 



North America: Sault Ste. Marie and N. Superior 

 region to Saskatchewan; S. to Maine, N. J. and Minn,; S. to 

 Mo. and Ark. 



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

 quent or local; dry and sandy soil. 

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