Smith—Algae Found in Wisconsin Lakes . 
539 
Order HORMOGONEAE 
Family OSCILLATORIACEAE 
Genus OSCILLATORIA Vaucher 1803. 
Oscillatoria limosa (DILLWYN) C. A. AGARDH, Disp. 
algarum Sueciae, Pars. 4, (1812) p. 35. Tilden, Minnesota 
Algae, 1 (1910) p. 65, t. 4, fig. 6. Conferva limosa Dillwyn, 
Brit. Confervae, (1802) t. 20. 
Along shore; Lakes Kegonsa and Waubesa. 
Oscillatoria tenuis C. A. AGARDH, Algarum decas se- 
cunda, (1813) p. 25. Gomont, in Ann. Sci. Nat. 7 Ser. Bot. 
16 (1892) p. 220, t. 7, figs. 2-3. 
Plankton; Lake Monona. 
var. tergestina (KUTZING) RABENHORST, Flora 
Eur. Algarum, 2, (1865) p. 102. Oscillatoria tergestina Kiit- 
zing, Tabulae Phycol. 1 (1849) p. 29, t. 39, fig. 8. 
Plankton; Lake Geneva. 
Oscillatoria curvieeps C. A. AGARDH, Systema Al¬ 
garum, (1824) p. 68. Gomont, in Ann. Sci. Nat. Ser. 7 Bot. 
16 (1892) p. 213, t. 6, fig. 14. 
Along shore; Upper Nemahbin Lake. 
Genus LYNGBYA C. A. Agardh 1824. 
Lyngbya limnetica LEMMERMANN, in Bot. Cent. 
76 (1898) p. 154. 
Plankton; Lake Geneva. Along shore; Soft Lake. 
Genus SPIRULINA Link 1834. 
Spirulina princeps W. & G. S. WEST, in Trans. Linn. 
Soc. London, 2 Ser. 6 (1901) p. 205. 
Along shore; Beaver and Nemahbin Lakes. 
Spirulina subsalsa OERSTED, in Natural Tidskrift 
(1842), p. 17, t. 7, fig. 4. Gomont, in Ann. Sci. Nat. 7 Ser. 
Bot. 16 (1892) p. 253, t. 7, fig. 32. 
Along shore; Upper Nemahbin Lake. 
Family STIGONEMACEAE 
Genus STIGONEMA C. A. Agardh 1824. 
Stigonema mamillosum (LYNGBYE) C. A. AG¬ 
ARDH, Systema Algarum, (1824) p. 42. Tilden, Minnesota 
