LIST OF HIGHER SEED-PRODUCING PLANTS. 383 



don 1306, Lake Benton; Ballard 763, Waconia; Taylor 864, 

 Glenwood; Ballard 889, St. Bonifacius; Sandberg 208, Cannon 

 Falls; Bailey 502, Agate bay; Herrick 116, Minneapolis; Rob- 

 erts 41, Grand Marais; Herrick 117, Minneapolis; Holzinger 83, 

 Winona Co.; Oestlund 62, Minneapolis; Herb. Sheld. 1921, Min- 

 neapolis; Herb. Moyer 85, Montevideo. 



LXXVIII. HALORRHAGIDACEAE Water- 

 Milfoil Family. 



Endlicher, Gen. PI. 1195 (1836-40); Endlicher, Gen. PI. 285 (1836-40)— 

 Gunneraceae: Bentham and Hooker Gen. Plant. I, 673 (1865); Baillon, Hist. 

 PI. VI, 485 (1877)— sub Onagmriaceae, Trib. V, VI, VII. 

 Genera: 6-7; cosmopolitan. 



Species: 100 ± living; almost all aquatic; a few fossil 

 in Tertiary rocks. 



HIPPURIS Linn. Gen. 1 (1737). 



Liiinnopeuce Vaill. Act. Acad. Par. 1 (1719). 

 Pinastella Dill. Nov. Gen. 168 (1719). 

 Baillon, Hist. PI. IV, 199; Benth. and Hook., Gen. PL I, 675; Durand, 

 Ind. Gen. Phan. 122; Schenck, Palaeophyt. 632, 



Living species: 3±; Europe; Asia; North America; 

 Chile to Patagonia. North America, 3; Europe, 1; Russia, 2; 

 Canada, 3; California, 1; PI. King, 1; Rocky mts., 1; PL 

 Wheel., 1. 



Fossil species: H. vulgaris in Cromer forest bed. 



Hippuris vulgaris Linn. Spec. 4 (1753). 



Limnopeuce vulgaris Vaill. Mem. Par. 15 (1719). 

 Hippuris polyphylla Raf. F1. Lud. 13 (1817). 

 Wats, and Coult., Gray's Man. 6 ed. 182; Mac, Fl. Can. I, 167, 529; 

 Coult., Fl. Colo. 99; Brew, and Wats., Fl. Calif. I, 215; Hook., Fl. Gt. Brit. 

 151; Forbes and Hems., Fl. Sin. 292; Led., Fl. Ross. II, 119; Nym., Fl. 

 Eur.; Wats., King Exp. 102; Roth., Wheel Exp. 119; Wats., Bibl. Ind. I, 

 356; Hart., Fl. Scand. I, 266; Greene, Fl. Fran. 228. 



Cosmopolitan: Europe; Asia; S. America; Australia. 

 North America: Newf., Labrador, N. S. to Hudson 

 straits, N. W. T. aud Alaska; S. to Penn., Ind., Mo., N. Mex. 

 and California. 



Minn, valley: Throughout, especially in W. districts; 

 local or rare; ponds, lakes and sluggish streams. 



Herb.: Taylor 1151, GIgyvnoo^.; Bailey lo4^,Verm\\ion 

 lake; Sandberg 202, Red Wing. 



MYRIOPHYLLUM Linn. Gen. 724 (1737). 



Pursliia Raf. N. Y. Med. Repos. II, 361 (1808). 

 Peloiiastes Hook. f. Lond. Jour. Bot. VI, 474 (1846). 



