CODIUM. 343 
PuatTE III. 
Fig. 15. Aripe sporangium. xX 350. 
Fig. 16. Apex of ripe sporangium, showing apical cavity 
and lamellated inner wall. x 800. 
Fig. 16a. Zoospores after escape from sporangium, The 
spot in the hyaline apex probably represents 
the nucleus. X 550. 
Figs. 17 and 18. Palisade cells with lateral sporangia. 
x 350. 
Fig. 19. Vegetative budding of one palisade cell from 
another. X 300. 
Fig. 20. Base of a ripe sporangium, showing the plug, 
the basal cavity, and the mode of separation of 
the sporangium. X 350. 
Fig. 21. Longitudinal section of the thallus, showing the 
relation of the medullary hyphe to the palisade 
ecells.= 5°60. 
