Myconostoc. 



41 



58. C. dichotoma, Cohn (" Beitrage," i. p. 185). 



Threads repeatedly and regularly dichotomously 

 branched, straight or slightly bent, about -3 /* thick, form- 

 ing small tufts of ^ or more mm. in diameter. (Fig. 35.) 



In putrid water, partly floating on the surface, pardy 

 attached to Algae. 



The branching is here, just as with C. Forsteri, only apparent. 

 A thread splits itself down the middle into two halves, which lengthen 

 independently, and thus grow side by side, whereby the piece which 

 was separated is pressed on one side, and so appears as a branch. 



59. C. Forsteri (Cohn.) 

 StrefftothrixFor- 

 steri, Cohn 

 (" Beitrage," 

 i. p. 186). 

 Threads straight or 

 bent, in places twisted in 

 irregular spirals, sparingly 

 and . irregularly branched, 

 separating into pieces of 

 various lengths. (Fig. 36.) 

 In the lachrymal canals 

 of the human eye, form- 

 ing tallowy or crumbling 

 masses, which are yel- 

 lowish-white or blackish, 



1I-3'" long, and about i" 

 (i.e. about 2 mm.) thick. 



Fig. 36.—Cladoihrix Fdrsieri, X 600. u, 

 the threads embedded amongst Micro- 

 cocci (after Cohn). 



XI. MYCONOSTOC, Cohn (« Beitrage," i. p. 183). 

 Threads very slender, colourless, inarticulate, but on 

 desiccation breaking up into short cylindrical fragments. 



