I think this one may be a ceratiomyxa fructiculosa. If so, it does not belong to the fungi living organism kindgom - although it did in the past - and it belongs to the protist one.
Here you have some pictures to see if it was more or less this: https://www.google.com/search?q=mixomicetos+ceratiomyxa+fructiculosa&oe=utf-8&aq=t&rls=org.mozilla:es-ES:official&client=firefox-a&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi&ei=o_o4UKqbLoXi0QHZjYDwCQ&biw=1280&bih=612&sei=rPo4ULi5LY2u0AHP_4CABQ
Greetings
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