(89) 



EXPLANATION OF PLATE C. 



Fig. 1. — Cerainium rubrum, natural size. 



2. — Apex of branch. 



3. — Apex of brancli with favella. 

 4. — Same, more magnified. 



5. — Portion of branch -with tetraspores. 

 6, — Tetraspore from same. All magnified. 



A-oi.. IT. 



