44 METASPERMAE OF THE MINNESOTA VALLEY. 
Living species: 14-17; mostly American, but in all 
temperate and tropical regions. U. S8., 10-12; E. Sts., 7; So. 
Sts., 5; Canada, 4; California, 1; Atl. America and Tex., 10. 
Fossil species: 8-4; Tertiary; Alaska, Greenland, 
Spitzbergen (Heer); doubtful. 
Sagittaria rigida Pursu, Fl. Am. 397 (1814). 
S. heterophylla PursH, Fl. 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. . 
F HERB.: Sheldon 321, Madison Lake, Blue Earth Co. ; 
Ballard 814, Page Lake, Carver Co.; Sheldon 705, White Bear 
Lake; Ballard 588, Crystal Lake, Scott Co.; Tuylor 444, Lake 
Helena, Waseca Co.; Bailey 542, Long Lake; Herrick 289, Min- 
netonka; Sandberg 538, Centre City; Herb. Wickersheim 117, Ash 
Lake, Lincoln Co. 
Sagittaria graminea Micux. Fl. N. Am. I, 190 (1808). 
S. acutifolia PursH, Fl. Am. 397 (1814). 
S. purshii KUNTH, Bnum. III, 160 (1838). 
8. stolonifera ENGELM. and Gray, PI. Lindh. 26 (1845). 
S. simplex. AucT. AMER. 
Wats. and Coult., Gray’s Man. 6 ed. 555; Britt., 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 608, Prior’s Lake, Scott Co.; Ballard 
237, Jordan, Scott Co.; Berseth 1, Minneapolis. 
Sagittaria sagittaefolia Linn. Spec. 993 (1753). 
. minor MILL. Dict. (1768). 
. major Scop. Fl. Carn. II, 239 (1772). 
. monoica GiLIB. FI. Lith. V, 218 (1781). 
. vulgaris GULDENST. Reise Russ. II, 45 (1791). 
. latifolia and obtusa WILLD. Spec. IV, 409 (1805). 
Vallisneriu bulbosa Potr. Enc. Meth. VIII, 321 (1806). 
Sagittaria heterophylla SCHREB. Fi. Erl. II, 119 (1811). 
S. gracilis, hastata and simplez PursH, Fl. Am. II, 396 (1814). 
S. variabilis EN@ELM. Gray’s Man. ed. 1 (1848). 
S. longilobu ENGELM. Torr. Mex. Bound. (1858). 
S. sagittaefolia var. variabilis Micueut, D.C. Mon. Phan. III, 69 
DHARAH 
(1881). 
