INDIANA MUSHROOMS
          Hypomyces luteovirens
Normally, the gills and stem of this Russula mushroom are
white, but this collection has been attacked by the parasitic
fungus
Hypomyces luteovirens.
This microscope image shows the perithecia (tiny fruiting bodies)
of
Hypomyces luteovirens that contain the spore producing cells.
See Hypomyces luteovirens at
MushroomExpert.Com