Penicillium notatum fungus Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/Penicillium-notatum Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article.

　　External Websites Ask the Chatbot a Question Written and fact-checked by Written and fact-checked by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... The Editors of Encyclopaedia Britannica Last Updated: Oct. 9, 2025 •Article History Table of Contents Table of Contents Ask the Chatbot Penicillium notatum, species of fungus in the genus Penicillium (kingdom Fungi) that occurs naturally in soil and decaying organic matter. It can colonize a variety of surfaces in damp indoor environments and is especially common on fruit, bread, and other food. P. notatum is very closely related to P. chrysogenum and P. rubens and has at times been considered synonymous with both. P. notatum was once widely thought to have been the mold behind Scottish...

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