EXPLANATIONS AND REFERENCES, 



CXIII. 



Figures magnified 125 diameters. 



PAGE. 

 Fig. 1-3. PITHOPHORA OEDOGONIA, Var. vaucherioides with numerous 



sporangia, . . .130 



Figs. 4, 5. " " sporal branchlets, . 131 



" 6, 7. " " two immature filaments, . 131 



