Hainault Forest
AGARICOMYCETES
Small Tortoiseshell
Aglais urticae
TQ4792 13/01/2026 ©Raymond Small

Oyster Mushroom

Pleurotus ostreatus 


Oyster mushrooms are shell-shaped fungi that flourish in layers or clusters on decaying trees or stumps. They thrive by absorbing nutrients from decaying organic matter, showcasing their saprotrophic nature. Not confined to a particular season, these mushrooms can be discovered year-round, especially after a chilly period that encourages the fungus to fruit. Their cap diameters typically range from 5 to 16 cm, while their stems measure between 1 and 4 cm.

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