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. Pl. 1195 (1836-40); Endlicher, Gen. Pl. 285 (1886-40)— 
Gunneraceae; Bentham and Hooker Gen. Plant. I, 673 (1865); Baillon, Hist. 
Pl. VI, 485 (1877)—sub Onagrariaceae, Trib. V, VI, VII. 
Genera: 6-7; cosmopolitan. 
Species: 100+ living; almost all aquatic; a few fossil 
in Tertiary rocks. 
HIPPURIS Linn. Gen. 1 (17387). 
Limnopeuce VAILL. Act. Acad. Par. 1 (1719). 
Pinastella DILL. Nov. Gen. 168 (1719). 
Baillon, Hist. Pl. TV, 499; Benth. and Hook., Gen. Pl. I, 675; Durand, 
Ind. Gen. Phan. 122; Schenck, Palaeophyt. 632. 
Living species: 8+; Europe; Asia; North America; 
Chile to Patagonia. North America, 3; Europe, 1; Russia, 2). 
Canada, 3; California, 1; Pl. 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 Rar. Fl. 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. 8S. 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. 
Hers.: Taylor 1151, Glenwood; Bailey 184, Vermilion 
lake; Sandberg 202, Red Wing. 
MYRIOPHYLLUM Linn. Gen. 724 (1737). 
Purshia Rar. N. Y. Med. Repos. II, 361 (1808). 
Pelonastes Hoox. f. Lond. Jour. Bot. VI, 474 (1846). 
