LIST OF HIGHER SEED-PRODUCING PLANTS. 209 



Polygonum aviculare Linn. Spec 362 (1753). 



p. centinodium Lam. F1. Fr. Ill, 237 (1793). 

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

 P. provinciale 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. Damm. 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; Ballard 524, Cleary's lake. Scott Co.; Sandhevg 

 4S2, Red Wing; Roberts 116, Grand Marais; Kassuhe 208, 

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

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



Polygonuni virginiaiium Linn. Spec. 360 (1753). 



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

 Persicaria virginiana Gaehtn. 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 2S8, Madison Lake, Blue Earth Co. 



Polygonum articulatum Linn. Spec. 361 (1753). 



Polygonella articulata Meisx. 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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