PLATE 24 



Gomontia poJyrkiza (Lagerh.) B. and F. 



Fig. 1. A group of three "sporangia," the two larger nearing maturity. 

 X 175. 



Gomontia habrorJiiza S. and G. 



Fig. 2. A young thallus. X 375. 



Fig. 3. a-e, illustrating three forms of ' ' sporangia. ' ' 



PseudulveUa consociata S. and G. 



Fig. 4. A surface view of a young thallus. X 375. 



Fig. 5. A section of a mature thallus. X 375. 



Fig. 6. A vertical filament near the surface of a young thallus showing 



branching. X 225. 



Entocladia codicoJa S. and G. 



Fig. 7. (a) A young thallus, showing the method of branching of the 

 filaments and their radiating from a center. X 125. 



Fig. 7. (6) A mature thallus with sporangia in the center. X 125. 



Prasiola delicata S. and G. 

 Fig. 8. A surface view showing typical arrangement of cells. X 500. 



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