PLATE 42 



ACHLYA APICULATA 



Fig. I. Cylindrical and spherical oogonia. X 167. 



Fig. 2. A dictiosporangium, with one of the spores sprouting into a filament. X 447. 



Fig. 3. Habit of oogonia and antheridia. X 102. 



Fig. 4. Sporangia, several in serial arrangement in same hypha. X 100. 



Fig. 5. Spore emerging from cyst. X 720. 



Fig. 6. A mature egg. X 447. 



Fig. 7. Gemmae. X 107. 



Fig. 8. A small dictiosporangium. X 167. 



Fig. 9. Peculiar case in which an oogonial initial was halted and sent ofT an antheridial 

 branch. X 167. 



Fig. 10. Oogonia. X 247. 



Fig. II. Sporangia, one on left a dictiosporangium with the spores emerged but not swim- 

 ming; one in center containing four sprouting spores. X 60. 



Fig. 12. An intercalary oogonium. X 247. 



Fig. 13. Sporangia and oogonium with androgynous antheridium. X 167. 



Fig. 14. An intercalary oogonium with a papilla. X 247. 



