Identification: fungus identification

Discussion in 'Fungi, Lichens and Slime Molds' started by Mark09831, Sep 16, 2009.

  1. Mark09831

    Mark09831 Member

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    I've seen quite a few tree limbs in southwestern Pennsylvania with this smooth, black-like tar on the surface. I believe it is a fungus and not lichen. Does anyone know what species of fungus it is?
     

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  2. Frog

    Frog Generous Contributor Forums Moderator 10 Years

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    You're right though, it is a fungus, and I think I can see the teeny pimple like projections from the surface often characteristic of an ascomycete.
    It might be a Hypoxylon species (carbon cushions) or relative, but it is flatter than the usual Hypoxylon.
    Lichens are fungi as well, and there are a few black crustose (flat) ones that look like this, but none I'm personally familiar with that would grow on branches like that.
    I'm going to flip through some books and if I find it I'll get back to you, unless someone else beats me to it :-)
     
  3. Frog

    Frog Generous Contributor Forums Moderator 10 Years

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