November fungi - Pearly Powdercap

I see the Earthy Powdercap (Cystoderma amianthinum) often - it is one of the commoner grassland fungi. The closely related Pearly Powdercap (Cystoderma carcharias) pictured above seems much less common. I saw it for the first time in an orchard in Penallt. It has somewhat different colouration and a more persistent ring but the clincher is that it smells mealy whereas the Earthy Powdercap does not have a distinct smell.