PLATE 13 

 Saprolegnia monoica var. glomerata 



Fig. I. Spores encysted within a typical sporangium. X 167. 

 Fig. 2. Gemmae in a chain. X 247. 



Fig. 3. Oogonium with gemmae growing out from beneath it. X 247. 

 Fig. 4. Empty sporangium containing a cylindrical oogonium and an antheridium. X 247. 

 Fig. 5. Gemmae. X 247. 

 Fig. 6. Proliferating sporangia. X 447. 



Fig. 7. Sporangium growing from beneath an old one as in Achlya. X 247. 

 Fig. 8. Apical oogonium with conspicuous pits and with a thick-walled outgrowth from be- 

 low. X 447- 

 Fig. 9. A typical oogonium with antheridia. X 447. 

 Fig. 10. Oogonium with abnormally small eggs. X 447. 

 Fig. II. Oogonium with androgynous and diclinous antheridia. X 247. 



