23O NEW YORK STATE MUSEUM 



Hydnum albidum Pk. 



White Hydnum 



GURE 



1 Group of four plants 



2 Plant of medium size 



3 Plant having the cap wavy on the margin 



4 Plant having the stem eccentric 



5, 6 Vertical sections of the upper parts of two plants, one with the stem 

 eccentric 



7 Four spores x 400 



Hydnum caput-ursi Fr. 



Bear's head Hydnum 



8 Small plant of vertical growth 



9 Plant of lateral growth 



10 Vertical section of a plant of upright growth 



1 1 Vertical section of a plant of lateral growth, showing both upward and 



downward development 



12 Four spores X 400 



