EXPLANATION OF PLATE XI. 



Physanini nezvtoni Macb., p 39°- 

 Fig. I. Sporangia X 20. 

 Fig. \a Gapillitiuni highly magnified. 

 Fig. \b. Spore X 1000. 



Physarum columbiuuin Macb., p. 3S4. 

 Fig. 2. Sporangia X about 20. 

 Fig. 2a. Capillitium highly magnified. 

 Fig. 2b. Single spore X 1000. 



Phvsarum ohlatiim Macb., p. 3'^4- 



Fig. 3- Sporangia X 24. 



Fig. 3rt. Capillitium highly magnified. 



Fig. 3^. A single spore X 1000. 



Cratrrium prduuculatiiiu Trent., p. 3S5. 

 Fig. 4. Sporangia 14. 



Didyininm sijiiainiilosniii (A. & .S ) Fries, p. 386. 



Fig. 5. Sporangia X 14- 



Fig. 5^^ Tips of capillitial threads adhering to the inner surface of the peridial 



wall. 

 Fig. 5*''. A single spore X 1000. 



