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COLLINS AND HERVEY. 



PLATE I. 



Oedogonium consociatum Collins & Hervey. 



Figure 1. Large cluster of young filaments. 255 X 1. 



Figure 2. Smaller cluster of same. 255 X 1. 



Figure 3. Single filament with attached basal cell. 550 X 1. 



Figure 4. Filament with oogonium (immature). 550 X 1. 



Chaetomorpha minima Collins & Hervey. 



Figure 5. Filament of two cells. 800 XI. 

 Figure 6. Filament of five cells. 550 X 1. 

 Figure 7. Filament of five emptied cells. 550 X L 



Nitophyllum Wilkinsoniae Collins & Hervey. 

 Figure 8. Whole plant, f nat. size. 



