CLASS I. SCHIZOPHYCEAE COHN, 1879. 



(Myxophyceae Stizenberger, 1860; Phycochromophyceae Hahenhorst, 18G3 -jCyanophyceen 

 Sachs, Lehrbuch der Botanik, 4 Aufl., 1874, 249; Cohn, Jahresber. Schles. Ges. f. vaterl. 

 Cultur, f. 1879, 279-289.) 



Schi.zo.phy'ce.ae. Gr. noun schizo cleft, fission; Gr. noun phycus seaweed, alga; M.L. 

 pi. noun Schizophyceae fission algae. 



The organisms in this class are usualh' designated as the blue-green algae and are studied 

 in connection with other types of algae (green, brown and red) and the higher fungi in 

 courses in Cryptogamic Botany. However, the blue-green algae differ structurally from all 

 other types of Thallophyta. On the other hand they resemble the bacteria so that the blue- 

 green algae and the bacteria are commonly classed in the same Division of the Plant King- 

 dom. 



In order to identify the species of blue-green algae, consult any of the following books: 



O. Kirchner, Schizophyceae, in Engler and Prantl, Die Natiirlichen Pflanzenfamilien, I 

 Teil, Abt. la, 1900, 45-92; Gilbert H. Smith, Cryptogamic Botany, 2nd ed.. Vol. 1, Algae 

 and Fungi, New York, 1955, 526 pp.; Gilbert H. Smith, Freshwater Algae of the United 

 States, New York, 1950, 719 pp. 



The Schizophyceae are not described further in the present Manual. 



