Defence quizzes mushroom expert on death cap look-a-likes
The defence is quizzing mycologist Thomas May on death cap mushroom look-a-likes.
The court earlier heard that one common look-a-like of the death cap mushroom is a stubble rosegill.
Under cross-examination, the defence showed May photos of stubble rosegills posted on iNaturalist.
He confirmed one photo appeared to be a stubble rosegill, but noted a second photo, purportedly of the same mushroom, had different features, which suggests it may have been misidentified.
The defence asked May if the stubble rosegill was known to be edible, with the mycologist responding that he doesn’t have specific information on that, but he believes it is.
Asked whether the stubble rosegill grows around Victoria’s Gippsland region, May said he believes that is the case.
May was then shown photos of a oudemansiella gigaspora.
Under questioning by the defence, May confirmed the oudemansiella gigaspora does have overlapping features to the death cap - such as a brown cap and white gills - and also grows in the Gippsland region.
Next, the defence showed May photos of honey mushrooms and asked if it, too, had similarities to the death cap - such as a brown cap and white gills.
May said the genus is quite large and he does not believe all honey mushrooms have white gills.
Asked whether they grow in the Gippsland region, May said he understands some honey mushrooms do, but the variation found in Australia is typically bitter and not one he would expect local foragers would seek out.
The defence then showed May photos of a shaggy parasol, which is known to grow around Victoria’s Gippsland region.
The defence asked whether it was known to be toxic, with May saying it was one the Victorian poisons centre encounters reports of often, as it is known to cause stomach upset if eaten.
By Tita Smith
Erin Patterson is accused of killing three people with poisonous death cap mushrooms.
7news.com.au