Smith—Algae Found in Wisconsin Lakes 
623 
Merismopedia glauca (Ehr.) Nageli. 
Cratt. einz. Algen 55. pi. 1, f. D 1849. 
II. Mill (rr). 
III. Lac Court Oreilles (rrr). 
Merismopedia elegans A. Br. 
In Kiitzing, Species Algarum 472. 1849; G. S. West, Brit. Fresliw. Algae 
348. /. 162. C. 1904. 
II. Center (rr). 
III. Beaverdam (r). 
Order Hormogoneales. 
Family OSCILLATORIACEAE 
Genus LYNGBYA C. A. Agardh 1824. 
Lyngbya birgei G. M. Smith. 
Bull. Torr. Bot. Cl. 43: 482. pi. 26, /. 28. 1916. 
II. Elizabeth (ss), Mary (ss). 
Genus TRICHODESMIUM Ehrenberg 1830. 
Trichodesmium lacustre Klebahn. 
Forschungsbr. a. d. Biol. Stat. fcu Plon 3: 13. 1895; Flora 80: 271. pi. 4, 
figs. 31-33. 1895. 
The general manner of growth of this alga suggests Aphani- 
zomenon, but a careful search has failed to demonstrate the 
presence of heterocysts. It differs from sterile specimens of 
Aphanizomenon in the shorter and relatively broader cells. 
(Plate 14, .fig. 5). 
III. Island (r), Eice (rr). 
Family NOSTOCACEAE 
Genus ANABAENA Bory de St. Vincent 1823. 
Anabaena pIjANCTonica Brunnthaler. 
Sitzbr. d. Kais. Ak. d. Wiss. Wien. 112^: 292. 1903. 
II. Center (cc). 
