Other Green Algae 127 



them again uninjured, after the force of the flood is 

 spent. And Ch&tophora (fig. 47; also fig. 89 on p. 182) ; 

 which is always deeply buried under a transparent mass 



FIG. 48. Chaetophora (either species) crushed and outspread 

 in its own gelatinous covering and magnified to show the 

 form of the filaments. 



of gelatin; which forms little hemispherical hillocks of 

 filaments in some species, and in one, extends outward 

 in long picturesque sprays, but which has in all much 

 the same form of plant body (fig. 48) a close-set branch- 

 ing filament, with the tips of some of the branches ending 

 in a long hyaline bristle-like point. Chaetophora grows 

 very abundantly in stagnant pools and ponds in mid- 



