Boletus viridarius Frost 



GREEN LAWN BOLETUS 



1 Young plant with tubes concealed by the veil 



2 Young plant with tubes exposed 



3 Mature plant showing a fragment of the white veil still adhering to the 



margin of the cap 



4 Mature plant with whitish cap appendiculate with the ruptured veil 



5 Young plant with yellowish tubes 



6, 7 Mature plants showing color of mature tubes ; stem of no. 7 only 

 partly reticulated above the collar 



8 Vertical section of upper part of a young plant 



9 Vertical section of upper part of a mature plant 

 30 Four spores, x .::;oo 



102 



