Pompon conidial heads of Aspergillus niger
Left: Macro view of the fungus fruiting on agar ion a Petri Plate. The conidia of A. niger are not black but very dark brown. By reflected light, to the unaided eye, colonies will appear almost black. For microscopic view of a pompon head of ans Aspergillus click here.
Right: The SEM shows the compact phialides arising from the vesicle to give the spherical head. The tiny conidia (= spores, phialospores) are produced in long chains from the mouth of the phialide (= conidiogenous cell, sporogenous cell).