PLATE 59 

 Apodachlya brachynema 



Figs. I, 2. Mature oogonia on their moniliform branches. One has two oil drops. X503. 



Fig. 3. Two mature oogonia and one immature. X 503. 



Fig. 4. A nearly mature oogonium. X 810. 



Fig. 5. An oogonium with a large vacuole in an early stage of maturation. X 810. 



Fig. 6. An empty sporangium with a young one by it. X 503- 



Fig. 7. A sporangium approaching maturity. X 810. 



Fig. 8. A long, empty sporangium with a young spherical one on the same thread. X 278. 



Figs. 9, 10. Sporangia with the hypha continued beyond. X 503- 



Fig. II. A sporangium after opening with one spore retained. X S^o- 



Fig. 12. A sporangium after opening with 4 spores retained and a young sporangium by it. 



X 503- 



Fig. 13. A sporangium that failed to open, the mature spores still retained. X 503- 

 Fig. 14. An empty sporangium. X 503. 

 Fig. 15. Two sporangia in a row. X 278. 



Fig. 16. A joint of an old thread with the opening stopped by a plate of cellulin. X 810. 

 Fig. 17. A branched hypha in active growth. X 503- 

 Fig. 18. A spore in first swimming stage with two apical cilia. X 810. 

 Fig. 19. A spore emerging from its cyst. X 810. 



Fig. 20. A spore in the second swimming stage (cilia not shown). X 810. 

 Fig. 21. A spore sprouting after the second encystment. X 810. 



Fig. 22. A sporangium with some of the spores retained, some held at the mouth (a few had 

 swum away). X 303. 



