LIST OF HIGHER SEED-PRODUCING PLANTS. 207 



Wats, and Coult., Gray's Man. 6 ed. 440; Britt., Fl. N. J. 209; Mac, 

 Fl. Can. I, 410; Upham, Fl. Minn. 119; Webb., Fl. Neb. 112; Wats., 

 Fl. Calif. II, 13; Coult.. Fl. Colo. 320; Miyabe., Fl. Kur. 257; Led., 

 Fl. Ross. Ill, f^20; Nym., Fl. Eur.; Trautv., Fl. Sib. 100; Hook., Fl. Gt. 

 Brit. 344; Herd., Fl. Eur. Russ. 112; Wats., King Exp. 316; Roth., Wheel. 

 Exp. 232; Cov., Fl. Ark. 215; Hart., Fl. Scand. I, 332; Engl. Damm., Nat. 

 Pflanz. 3, 1 o. 28; Greene, Fl. Fran. 137. 



Most Europe to Siberia, Dahuria, China, Japan, Kurile 

 Isls. and Saghalin; W. Himalayas; S. Africa. 



North America: Q., Ont. to Brit. Col. and Pac. S., E. 

 of Sierras, to Mexico and E. to Atlantic. 



Minn, valley: Forest district and far N. W. ; aquatic; 

 floating in quiet waters. 



Herb. : Leonard 43, Crystal lake. 



Polygonum peiisylvaniciim Linn. Spec. 361 (1753). 



P. scabrum Moench, Suppl. 267 (1802). 

 ?P. bicorne Raf. Fl. Lud. 29 (1817), 

 Wats, and Coult., Gray's Man. 6 ed. 440; Britt., Fl. N. J. 208; Upham, 

 Fl. Minn. 119; Webb., Fl. Neb. 112; Coult., Fl. Colo. 319; Chap., Fl. S. St. 

 388; Wats., Fl. Calif. II, 13; Mac, Fl. Can. I, 409. 



North America: N. S., N. Br., Q., Ont. to Minn., 

 Dak. , Neb. , Colo, and Sonora, Calif. ; E. to N. Eng. and N. J. ; 

 S. to Ga. and Ark. 



Minn, valley: Throughout; moist soil, river banks, 

 barren shores of lakes and sloughs. 



Herb.: Sheldon 1047, Sleepy Eye; Taylor 8^9, Glen- 

 wood; Ballard 613, Chaska; Ballard 622, Chaska; Ballard 848, 

 Patterson lake. Carver Co.; Ballard 803, Goose lake, Carver 

 Co.; Ballard 660, Waconia; Ballard 879, Waconia; Ballard 742, 

 Waconia; Ballard 504, Prior's lake, Scott Co.; Oestlund 156, 

 Minneapolis; Sandberg JfSO, Cannon Falls; Huntington 13, Rock 

 Co.; Herb. Sheld. 1675, Minneapolis; Herb. Wickersheim 111, 

 Lake Park, Becker Co. ' 



Polygonum incarnatum Ell. Sk. I, 456 (1821). 



P. nodosum var. incarnatum GRA.Y, Man, 3 ed. 372 (1852). 

 P. lapathifoUum var. incarnatum Wats, and Coult. Gray's Man. 

 6 ed. 440 (1890). 



Mac, Fl. Can. I, 409; Upham, Fl. Minn. 119; Britt., Fl. N. J. 209; 

 Webb.. Fl. Neb. 112; Chap., Fl. S. St. 388; Coult., Fl. Colo. 319; Mac, Fl. 

 Can. II, 353; Led., Fl. Ross. Ill, 521; Nym., Fl. Eur., in var.; Hook., Fl. 

 Gt. Brit, in var. 344; Cov., Fl. Ark. 216; Webb., Appx. Neb. 27. 



All Earope; N. Russia to Ural Siberia— in vars. 

 North America: N. S., N. Br., Ont., L. Nipigon to 

 Vancouver; S. to N. J. and S. Car.; W. to Minn., Dak., Neb., 

 Ark., Mo. 



