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Compost heap fungus. Coloured scanning electron micrograph of the fungus Aspergillus glaucus growing on bread in a compost heap. Compost is made by stacking plant remains together in a heap. The plant material degrades and the resulting brown crumbly compost is dug in to enrich the soil. Aspergillus is a mould most often found growing on breads and jams. Here, two heads containing numerous chains of conidiospores (small, round) can be seen in upper frame. They are supported by stalk-like condiophores attached to the branching hyphae. When ripe, conidiospores are easily dislodged by air currents or physical contact. Magnification: x140 at 6x7cm size.
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