I've been using GH Subculture M in my organic soil mix for over a year. Lately, a couple of my older mothers have been producing mushroom flushes. It's nice to see fruit of the mycorrhizal/plant relationship.
It appears to be a Glomus from the Subculture M.
"Glomus is a genus of arbuscular mycorrhizal (AM) fungi, and all species form symbiotic relationships (mycorrhizas) with plant roots. Glomus is the largest genus of AM fungi, with ca. 90 species described, but as currently defined is non-monophyletic."
http://en.wikipedia.org/wiki/Glomus_(fungus)
It appears to be a Glomus from the Subculture M.
"Glomus is a genus of arbuscular mycorrhizal (AM) fungi, and all species form symbiotic relationships (mycorrhizas) with plant roots. Glomus is the largest genus of AM fungi, with ca. 90 species described, but as currently defined is non-monophyletic."
http://en.wikipedia.org/wiki/Glomus_(fungus)