LIFE HISTORIES OF FUNGI 285 



sheets or in a delicate network of strands, or both 

 (Fig. 208). When viewed under the microscope the 



Fig. 208. — -Plasmodium of a slime-mold (myxomycete), Fuligo septica, 

 growing on the inner surface of a glass jar. The natural color was bright 

 orange. 



protoplasm is seen to be in almost constant motion, flow- 

 ing for about a minute in one direction; gradually slowing 



Fig. 209. — -Fruiting bodies of a myxomycete {Comatricha suksdorfii 

 E. and E.), greatly enlarged. (Photo from type specimen.) 



up, it comes to rest, and then resumes its flowing, but in the 

 opposite direction, also for about a minute. Different 



