Erin Patterson has pleaded not guilty to murdering Don and Gail Patterson and Heather Wilkinson, and not guilty to attempting to murder Ian Wilkinson, with a beef wellington lunch containing death cap mushrooms at her home in regional Australia.Photograph: James Ross/AAP
An internationally renowned mushroom expert who discovered death caps near Erin Patterson’s home has started giving his evidence in her triple murder trial.
Dr Thomas May, a mycologist or scientist specialising in fungi, appeared in Patterson’s trial on Tuesday.
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