ERIC GRAVE / SCIENCE PHOTO LIBRARY ERIC GRAVE / SCIENCE PHOTO LIBRARY
Bread mould. Macrophotograph of a slice of bread infested with various species of bread mould; the presence of different species is revealed by the assortment of colours visible. Fungal spores are widespread in the air and will readily colonise exposed food, including bread. The spores quickly sprout into a network of threads (hyphae) which spread across the bread. This mass of hyphae, or mycelium, produces aerial fruiting bodies (sporangia) which burst and release more spores into the air. Common bread moulds include those of the Penicillium, Aspergillus, Rhizopus and Mucor genuses. Magnification unknown.
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