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honey fungus

noun
  1. an edible basidiomycetous fungus, Armillaria mellea, having a yellow-spotted cap and wrinkled stems, parasitic on the roots of woody plants, which it may kill by root rot. It spreads by thin black underground strandsAlso called: bootlace fungus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012