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Penicillium
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Penicillium notatum and penicillin
Observe time-lapse photography of Penicillium mold releasing penicillin to its surroundings
green mold
Notice the growth of Penicillium and yeast
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Penicillium notatum and penicillin
Penicillium notatum and penicillin Penicillium notatum, the source of penicillin.

Penicillium

genus of fungi
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Penicillium, genus of blue or green mold fungi (kingdom Fungi) that exists as asexual forms (anamorphs, or deuteromycetes). Those species for which the sexual phase is known are placed in the Eurotiales. Found on foodstuffs, leather, and fabrics, they are of economic importance in the production of antibiotics (penicillin, q.v.), organic acids, and cheeses.

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