44 METASPERMAE OF THE MINNESOTA VALLEY. 



Living species: 14-17; mostly American, but in all 

 temperate and tropical regions. U. S., 10-12; E. Sts., 7; So. 

 Sts., 5; Canada, 4; California, 1; Atl. America and Tex., 10. 



Fossil species: 3-4; Tertiary; Alaska, Greenland, 

 Spitzbergen {Heer); doubtful. 



Sagittaria rigida Pursh, F1. Am. 397 (1814). 



S. heterophylla Pursh, F1. Am. 396 (1814) not Schreb. 

 Wats, and Coult., Gray's Man. 6 ed. 555; Britt.,Fl. N. J. 256; Upham, 

 Fl. Minn. 138; Chap., Fl. S. St. 449; Mac, Fl. Can. II, 78. 



North America: St. Lawrence to N. Eng., N. J. and 

 Fla. ; W. to Minn, and Mo. 



Minn, valley: Throughout; edges of lakes or quiet 

 streams; abundant. 



Herb.: Sheldon 321, Madison Lake, Blue Earth Co.; 

 Ballard SH, Page Lake, Carver Co. ; Sheldon 705, White Bear 

 Lake; Ballard 588, Crystal Lake, Scott Co.; Taylor 44-4, Lake 

 Helena, Waseca Co.; Bailey 54-2, Long Lake; Herrick 289, Min- 

 netonka; Sandberg 538, Centre City; Herb. Wickersheim 117, Ash 

 Lake, Lincoln Co. 



Sagittaria graminea Michx. Fl. N. Am. I, 190 (1803). 

 S. acutifolia Pursh, Fl. Am. 397 (1814). 

 S. purshii Kunth, Enum. Ill, 160 (1838). 

 S. stolonifera Engelm. and Gray, PI. Lindh. 26 (1845). 

 S. simplex. AuCT. Amer. 

 Wats, and Coult., Gray's Man. 6 ed. 555; Eritt., Fl. N. J. 256; Mac, Fl. 

 Can. II. 79; Webb., Fl. Neb. 97; Chap., Fl. So. St. 449; Cov., Fl. Ark. 228. 

 North America: Cape Breton. N. Br., Ont. to N. Eng., 

 N. J., Fla.; W. to Minn., Neb., Ark. and La. 



Minn, valley: Forest district; local or infrequent; 

 edges of ponds and quiet streams. 



Herb.: Ballard 603, Prior's Lake, Scott Co.; Ballard 

 237, Jordan, Scott Co.; Berseth 1, Minneapolis. 



Sagittaria sagittaefolia Linn. Spec. 993 (1753). 

 S. minor Mill. Diet. (1768). 

 S. major Scop. Fl. Cam. II, 239 (1772). 

 fir. monoica GiLiu. Fl. Lith. V, 218 (1781). 

 S. vulfjo.ris GULDENST. Reise Russ. 11,45(1791). 

 S. latifolia and obtusa Willd. Spec. IV, 409 (1805). 

 Vallisneria bnlhosa,Foui. Enc. Moth. VIII, 321 (1806). 

 SacjiUaria litterophylla Schreu. Fl. Erl. II, 119 (1811). 

 S. gracilis, liastata and simplex PuRsn, Fl. Am. II, 396 (1814). 

 S. variabilis Enoelm. Gray's Man. ed. 1 (1818). 

 S. lonijiloba Engelm. Torr. Mex. Bound. (1858). 

 S. sagittaefolia var. variabilis Micheli, D. C. Mon. Phan. Ill, 69 

 (1881). 



