Identification: black spots on wood board

Discussion in 'Fungi, Lichens and Slime Molds' started by ariani, Mar 19, 2013.

  1. ariani

    ariani Active Member 10 Years

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    What causes the black spots on wood boards, in the begining they are lighter then change the colour.
     

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    ariani, Mar 19, 2013
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  2. ariani

    ariani Active Member 10 Years

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    Is any one who can help?
     
    ariani, Mar 21, 2013
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