A worldwide community photographing and learning about wildlife
Cystoderma amianthinum
My guess Cystoderma amianthinum because it looks similar to a powdercap I've found (identified by someone on wildaboutbritain), also it's growing in grassland (Cystoderma amianthinum grows in this habitat) and Cystoderma amianthinum is widespead and common according to Collins complete guide (Paul Sterry). There were a number of similar looking mushrooms spread about this field/area
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