LIST OF HIGHER SEED-PRODUCING PLANTS. 38 
Sparganium androcladum (ENGELM.) Morone, Torr. Bull 
XV. 78 (1888). 
S. simplex var. androcladum ENGELM. Gray’s Man. 5 ed. 481 (1867). 
S. ramosum AUCT. ,AMER. in part. 
Wats. and Coult., Gray’s Man. 6 ed. 548; Britt., Fl. N. J. 252; Upham, 
Fl. Minn. 136; Coult., Fl. Colo. 360; Mac., Fl. Can., II. 60; Cov., Fl. Ark. 227. 
North America: N.S., N. Br., Q., Ont., Man., Saskatch- 
ewan and Vancouver; S. to Colo, Minn., Mo., N. Eng., N. J. 
and Fla. t 
Minn. valley: Reported from the S. E. district, rare; 
swamps, marshes and edges of lakes. 
Sparganium euryearpum ENGELM. Gray’s Man. 2d ed. 
(1852). 
Wats. and Coult., Gray’s Man. 6 ed. 548; Britt., Fl. N. J. 252; Webb., FI. 
Neb. 98; Mac., Fl. Can. IT. 69; Wats., FI. Calif. II. 188; Coult., Fl. Colo. 
359; Chap., Fl. So. St. 443; Upham, Fl. Minn. 135; Wats., King Exp. 337; 
Roth., Wheel. Exp. 269. 
North America: Newf., N. S., Ont., Man. to Humboldt 
River, Nev.; S. toN. Eng., N. J., Va.; W. to Minn., Neb. and 
Kan. 
Minn. valley: Throughout; swamps, marshes and 
edges of lakes. 
HERB.: Sheldon 258, Lake Washington, Le Sueur Co.; 
Taylor 1109, Glenwood; Taylor 522, Mud Lake; Taylor 673, 
Minnesota Lake; Sheldon 991, Cross Lake, Brown Co.; Sheldon 
644, Waseca; Ballard 111, Shakopee; Sandberg 528, Red Wing; 
Holzinger 268, Winona Co. 
Ill. POTAMOGETONACEAE. Pond-Weed 
Family. 
Zosteraceae Lindl. Veg. King. 145 (1846) p. p. 
Najadaceace Benth. and Hook., Gen. Pt. III. 1009 (1888); (Excl. 
Tribus I, Juncagineae. Tribus II, Apogetoneae. Tribus VII, Najadeae); 
Ascherson in Engl. and Prantl, Nat. Pflanz. 2, I. 194 (1889). 
Genera: 9 living; 3 extinct; cosmopolitan ; aquatic, 
principally in fresh water. 
Species: 75+ living; 20-80 ? extinct. 
POTAMOGETON Linn. Gen. 92 (1737) 
Peltopsis Raf. Jour. Phys. LXNXIX, 101 (1819), 
Spirillus and Groenlandica J. Gay, Comptes Rendus, Avr. (1854). 
Benth. and Hook., Gen. Pl. III, 1014; Durand, Ind. Gen. Phan. 453; 
Engler and Prantl, Nat. Pflanz. 2, 1, 207; Schenck, Palaeophyt., 381-383. 
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