70 Wisconsin Academy of Sciences, Arts, and Letters . 
EXPLANATION OF PLATE VI. 
Fig. 15. The first indication of a fruit body of Coprinus ephemerus . 
X 1500. 
Fig. 17. Same as Fig. 15. a, Y-shaped cell. X 1500. 
Fig. 19. Longitudinal section of the rhizomorph of Poria. a, Outer layer 
of thick-walled cells; c. Pocket containing crystals; b, Layer 
of closely packed crystals. X 1200. 
Fig. 20. Longitudinal section of the rhizomorph of Pholiota praecox . 
X 1200. 
Fig. 21. Longitudinal section of the rhizomorph of Lepiota naucina. 
X 1200. 
Fig. 22. Longitudinal section of the rhizomorph of Dietyophora dupli- 
cata. X 1200. 
Fig. 23. Longitudinal section of the rhizomorph of Ly coper don pyri- 
forme. X 1200. 
