spore_structure_septate
septum
spore wall layers easily separate and do not react to Melzer's reagent, layer 1 stained light blue in Cotton Blue, subtending hypha concolorous to spores; cylindrical to slightly flared, straight or recurved; wall composed of two layers continuous with spore wall layers 1 and 2, pore usually open, occasionally closed by a curved septum located 6-8 µm from the spore base or sometimes occluded by thickening of spore wall layer 2
Glomus cubense
Glomus cubense