THE FUNGI : ARCHIMYCETES AND PHYCOMYCETES 215 



Fig. 206. — Achlya rocemosa. Oogonium with smooth 

 wall bearing two antheridia on the stalk of the 

 oogonium. Below — Achlya colorata. Oogonium 

 with spiny wall bearing one antheridium on the 

 stalk of the oogonium. 



