60 WISCONSIN PHTTOPLANKTON 



var. MACROSPOBA (Wittrock) de Toni. PI. 9, Fig. 6; PL 10, Fig. 1. 



Sylloge algarum 5: 445. 1907. 



Anabaena Hassallii var. macrospora Wittrock, Bot. Not. 1882: 59, figs. 7-3. 

 1882. 



Vegetative cells somewhat smaller but with much narrower and pro- 

 portionally longer spores. 



Cells 7-8 p. broad ; heterocysts 7.5-10 p. broad ; spores 9-10.5 p. broad, 

 28-42 p long. 



Camp (sss). 



ANABAENA FLOS-AQUAE (Lyngbye) de Brebisson. PI. 10, Figs. 2-4. 



MSm. de la soc. Acad. de Falaise 1835: 36. 1836; Kutzing, Tabulae Phycol. 1: 

 61, pi. 94, fig. 4. 1848; Bornet et Flahault, Ann. Sci. Nat. 7 Ser. Bot. 7: 228. 

 1888. 



Filaments free-floating, densely coiled, irregularly twisted and inter- 

 woven to form a floccose colony. Cells spherical or cylindrical with 

 convex sides ; generally containing numerous pseudovacuoles. Hetero- 

 cysts broader and longer than the vegetative cells. Spores cylindrical, 

 with rounded ends, usually curved, solitary or in short catenulate 

 series ; generally adjacent to, rarely remote from the heterocysts. (Eu- 

 planktont) . 



Vegetative cells 4-8 (generally 5.5) p. broad; heterocysts 6-9 p. broad; 

 spores 7-13 p. broad, 20-50 p. long. 



Bear (1) (cc), Birch Island (r), Browns (cc), Camp (ss), Catfish (ss), 

 Catherine (rr), Cochrane (sss), Crab (r), Crawling Stone (rrr), Crooked (sss), 

 Des Moines (rr), Devils (1) (r), Eagle (sss), Fish (rr), Grassy (r), Green 

 (2) (sss), Half Moon (rr), Hooker (r), Horse (rrr), Jag (rr), Jennie (ss), 

 Kegonsa (rr), Lac Court Oreilles (ss), Lac la Belle (r), Little Crooked (rr), 

 Little Wood (r), Long (1) (rr), Long (3) (rr), Lower Nashotah (rr), Lynx 

 (sss), Mary (rr), Mendota (c), Mercer (rr), Mill (rr) Mud (2) (c), Nancy (s), 

 Oconomowoc (r), Okauchee (rr), Palmer (rr), Pine Tree (rr), Poplar (rr), 

 Round (1) (rr), Hound (3) (r), Rudolph (rrr), Sanford (c), Shell (rrr), 

 Sishebogema (rr), South Crab (rr), Squirrel (rr), Upper Nashotah (r), Upper 

 Nemahbin (rr), Waubesa (c), Wildcat (sss), Wolf (r). 



var. TRELEASII Bornet et Flahault. PL 10, Figs. 5-7. 



Ann. Sci. Nat. 7 Ser. Bot. 7: 230. 1888. 



Anabaena mendotae Trelease, Trans. Wis. Acad. Sci., Arts, & Lett. 7: 123, 

 pi. 10, flg. 5. 1889. 



Cells smaller and with spores somewhat narrower and proportionally 

 longer. ( Euplanktont ) . 



Vegetative cells 3-5 p. broad, 4.5-12 p. long ; heterocysts 4.5-6 p. broad, 

 6-8 p. long ; spores 6-8 p. broad, 20^40 p. long. 



Mendota (aa), Waubesa (s). 



