When growing on agar media, Clonostachys rosea (formerly Gliocladium roseum) exhibits two types of conidiophore morphologies. Early in the growth phase a Verticillium-like anamorph dominates where elongate , tapering, conidiogenous cells are produced in whorls along the length of an erect conidophore axis. In older cultures the morphology of the reproductive apparatus changes and a Gliocladium-like anamorph is produced. Here, the conidiogenous cells are short and clustered and the main axis branches at the apex in a penicillate arrangement. In both types the spores slime down to form a ball or mass at the apex of the conidiogenous cell(s).