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 Pla. ; W. to Oregon, 

 Utah, Calif, and N. Mex. 



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

 bogs; rare. 



Herb. : '^Sandberg 530, Goodhue Co. 



IV. NAJADACEAE. Naiad Family. 



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

 III. 1011 (1883); Magnus m 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). 



Fluvialis Michel. Nov. Ge)i.t.8 1729), and Pers.S^n. II. 530(1807;. 

 Caulinia Willd. Mevi. Acad. Berl. 87 (1798. 

 Ittnera Gmel. Fl. Bad. Ill, t. 4 (1808). 

 Benth. and Hook., Gen. PL III, 1018; Daiand, 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, -1; 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., Fl. Sed. 382(1824). 



Caidinia flexilis Willd. Act. Acad. Berol. 8S {1198}. 

 Fluvialis fleicUis 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; Uphani, Fl. Minn. 136: Chap., Fl. So. St. 444; Wats., Fl. Calif. 

 II, 191; Nyiu., Fl.Eur.: Hook., Fl. Gt. Brit. 439: Richt., PI. 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 

 010, Cottonwood river, near Sleepy Eye; Holzinger 264, Winona 

 Lake; Oestlnnd 183, Minnehaha; Baileii 3Sn, Mud Lake. 



