blue mould

British  

noun

1. Also called: green mould.  any fungus of the genus Penicillium that forms a bluish mass on decaying food, leather, etc

2. any fungal disease of fruit trees characterized by necrosis and a bluish growth on the affected tissue: mostly caused by Penicillium species

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Example Sentences

Bread with white and blue mould on it is fine to cut around and eat but black mould is dangerous.

From BBC • Oct. 24, 2014

I am ever reminded of blue mould, of stale damp.

From Old-Time Gardens Newly Set Forth by Earle, Alice Morse

Two or three rooms in an old house, if possible,—they are always the cheapest, my love; so don't look as if you saw cobwebs and blue mould, and felt black beetles running over your feet.

From Silver Pitchers: and Independence A Centennial Love Story by Alcott, Louisa May

Through the negligence of the servant they have been hung up in a damp state, and had become covered with blue mould.

From Punch, or the London Charivari, Volume 1, August 7, 1841 by Various

"Did you see many dead and wounded?" asked a very tired voice, that of one of the older reservists who was emaciated, with a complexion like blue mould.

From The Last Shot by Palmer, Frederick