PLATE 18 



Gomontia caudata S. and G. 



Fig. 1. T^\o pieces of filaments. X 400. 



Fig. 2. a-(l, Different stages and forms of "sporangia." X 400. 



Internoretia Fryeana S. and G. 



Fig. 3. A surface view of the liost plant, showing the method of permeation 

 and branching of a few terminal filaments. X 375. 



Fig. 4. A stage slightly in advance of fig. 3, showing cell divisions in planes 

 parallel to the long diameter of the cells. X 375. 



Fig. 5. A stage in development nearing maturity. X 375. 



Fig. 6. A cross section of the host cutting the filaments of Internoretia at 

 right angles to their long diameter. X 375. 



Entocladiu cingens S. and G. 

 Fig. 7. A plant groAviug in the membrane of Chaetomorplm californica and 

 nearing maturity. X 250, 



This plate is from Setchell and Gardner, Phyc. Cont. I, 1920, pp. 279-324, 

 pi. 23. 



[344] 



