Smith—Algae Found in Wisconsin Lakes 
621 
Aphanothece nidulans var. endophytica W. & G. S. West. 
Journ. Linn. Soc. Bot. 40: 432. pi. 19, /. 14. 1912. 
III. Chetac (ss), within colonies of CoelospJiaerium Naegelianum Unger. 
Aphanothece stagnina (Sprengel) A. Br. 
In Rabenhorst Algae No. 1572; Kiitzing, Tab. Phycol. 1: pi. 18, /. 3. 
Ill, Whitefish (rr). 
Aphanothece prasina A. Br. 
In Rabenhorst, Flora Eur. Algarum 2: 65. 1865; Cooke, Brit. Freshw. 
Algae 218. pi. 88, figs. 3a-3b, 1882. 
III. Beaverdam (r). 
Genus MICROCYSTIS Kiitzing 1833. 
Microcystis flos-aquae (Wittr.) Kirchner. 
In Engler & Prantl. nat. Pflanzenfam. 1: Abt. la: 56. fig. 49N 1898. 
II. Browns (cc). Center (cc), Paddock (ss.) 
III. Duck (ss), Horseshoe (rr). Shell (rr), Whitefish (ss). 
Microcystis aeruginosa Kiitzing. 
Tabulae Phycol. 1: 6. pi. 8. 1849. 
II. Browns (cc), Delavan (sss), Elizabeth (cc). Hooker (ss). Mill (sss). 
Silver (ss). 
III. Bear (rr). Devils (rr). Grindstone (rr), Owen (rrr), Pokegema (ss), 
Prairie (sss). Rice (ss). 
var. MAJOR (Wittr.) G. M. Smith. 
Trans. Wis. Acad. Sci. Arts. & Lett. 18 535, 1916. 
II. Center (rr). 
III. Vermilion (ccc). 
Microcystis incerta Lemmermann. 
Abh. Naturw. Ver. Bremen 17: 342. 1903; Ber. d. D. bot. Ges. 19: 93. pi. 4, 
fig. 8 1901. (as Polycystis incerta). 
II. Camp (rr). Hooker (s). 
III. Chetek (rr). Prairie (r), Whitefish (rr). 
Microcystis pulverea (Wood) Migula. 
In Thome, Flora v. Deut., Deutsch-osterr. u. d. Schw. 6: 36. 1907. 
II. Browns (ss). Mill (rrr). 
