The white with black dotted fungus came from the outside air sample (1 hour). The bottom is white, and the top is white with black dots which seems to be sclerotia, since the black dots formed at the edge of the plate. Growth rate was slow, but its mycelia are extended overlapping the neighbouring fungus. Due to its morphology, I believe this is Sclerotium cepivorum. The sclerotia or black dots did not seem to form at the top of the strands, so I eliminated Rhizopus stolonifera as a candidate.
