PLATE 43 



ACHLYA APICULATA 



Fig. I. A. apicidata, showing usual habit of oogonia. (Compare Fig. 4 below). X 68. 



ACHLYA APICULATA var. PROLIFICA 



Fig. 2. Oogonium inside sporangium. X 122. 



Fig. 3. Oogonia and antheridia. X iij- 



Fig. 4. Habit of oogonia and antheridia, showing relative number as compared with 



A. apicidata. X 117. 

 Fig. 5. Cylindrical oogonia in a sporangium. X 278. 



Fig. 6. Peculiar and characteristi ■ tips of threads of vegetative hyphae. X 112. 

 Fig. 7. Egg structure and peculiar internal wall. Oogonium with unevenly thickened 



wall and single mature egg of typical structure. X 1012. 



