The wierd and wonderful world of shrooms... A pic of a veil that is just starting to break away from the stalk.
'Overlay' (top-right) A 'crust' that takes over the casing layer when a substrate has been left too long to colonise the casing. The crust is impurvious to water and no shrooms will grow in this area. Can be overcome by 'deep-scratching' or by breaking through the layer with a sterile scalple blade.
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