by Elio — Maybe you have to be a mush­room en­thu­si­ast or a fun­gal ecol­o­gist to give this a thought, but count­ing the num­ber of mush­rooms in a tract of for­est will not tell you the size of the fun­gal bio­mass therein. The mush­rooms you see are only the fruit bod­ies. The whole fun­gal…