Strange Contaminant on Plate

Thomas Ziegler thomas at
Mon Jan 8 14:12:31 EST 2001

for me it looks like Armillaria sp (eg melea)
how old and do they turn brown soon and later even partially to black??
der kleine deutsche oeko-pilz-anbauer \
the  small  german organic mushroomer
le petit eco - champignoneur allemand /

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