Mold | fungus | Britannica (original) (raw)

mold Mold on surface of jelly.

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Also known as: mould

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peach moldMagnified view of peach mold (Rhizopus).

Observe time-lapse photography of Penicillium mold releasing penicillin to its surroundingsTime-lapse photography of Penicillium mold growth.

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mold, in biology, a conspicuous mass of mycelium (masses of vegetative filaments, or hyphae) and fruiting structures produced by various fungi (kingdom Fungi). Fungi of the genera Aspergillus, Penicillium, and Rhizopus form mold and are associated with food spoilage and plant diseases.

This article was most recently revised and updated by Kara Rogers.