40 METASPERMAE OF THE MINNESOTA VALLEY. 



Europe; Asia; North Africa; Philippines; Australia. 



North America: Anticosti, N. S., Q., Ont., N. E. T., 

 Saskatchewan and Man. ; S. to N J. and Fla. ; W. to Oregon, 

 Utah, Calif, and N. Mex. 



Minn, valley: Reported from S. central region; peat 

 bogs; rare. 



HERB. : tSandberg 530, Goodhue Co. 



IV. NAJADACEAE. Naiad Family. 



Najadeae (Tribus VII, Najadaceae) Benth. and Hook., Gen. PL 

 III. 1011 (1883); Magnus in Eng. and Prantl, Nat. Pflanz. 2, I. 214 (1889) 

 Genera: 1; temperate and tropical regions. 

 Species: 10-12 living; 1-2 extinct. 



NAJAS LINN. Gen. 701 (1737). 



Fl'ivialis MICHEL. Nw. Gen.t.S 1729),andPers.?/n. II. 530(1807). 

 Caulinia WILLD. Mem. Acad. Berl. 87 (1798 . 

 Ittnera GMEL. Fl. Bad. III. t. 4 (1808). 



Benth. and Hook., Gen. PI. Ill, 1018; Durand, Ind. Gen. Phan. 453; 

 Engler and Prantl, Nat. Pflanz. 2, I, 217 (Magnus); Schenck, Palaeophyt., 

 380. 



Living species: 10-12; temperate and tropical regions: Eu- 

 rope, 4; Russian Europe, 3; N. America, 4; E. Sts., 3; Cali- 

 fornia, 2; Canada, 1; So. Sts., 3; PL Wheel., 1. 

 Fossil species: Upper cretaceous and tertiary. 



Najasflexilis(WiLLD.) ROSTK. and SCHM., PI. Sed. 382(1824). 



Caulinia flexilis WILLD. Act. Acad. Berol. 88 (1798). 

 Fluvialisflexilis PERS. Syn. II, 530 (1807). 

 Najas graminea ROSTK. in Link. H. C. I, 287 (1829). 



. Wats, and Coult., Gray's Man. 6 ed. 566; Britt., Fl. N. J. 259; Mac., Fl- 

 Can. II. 91; Upham, Fl. Minn. 136; Chap., Fl. So. St. 444; Wats., Fl. Calif. 

 II, 191; Nym., Fl.Eur.; Hook., Fl. Gt. Brit. 439: Richt., PL Eur. 18; Herd. 

 Fl. Eur. Russ. 126; Engl. Magnus, Nat. Pflanz. II. 1, 217; Hart., Fl. Scand. 

 I, 404; Webb., Appx. Neb. 22. 



Great Britain, Scandinavia, N. Germany, Russia, Si- 

 beria; Mexico; W. Indies. 



North America: N. S., N. Br., Q., Ont. to Man., Brit. 

 Col. and Pac.; S. to N. Eng., N. J. and S. Car.; W. to Minn., 

 Iowa and Neb.; S. to San Francisco on Pac. coast. 



Minn, valley: Throughout; infrequent or locally 

 abundant; lakes, ponds and sluggish streams. 



HERB. : Taylor 450, Lake Helena, Waseca Co. ; Sheldon 

 910, Cotton wood river, near Sleepy Eye; Holzinger 264, Winona 

 Lake; Oestlund 183, Minnehaha; Bailey 389, Mud Lake. 



