Macrolepiota procera var. permixta
It’s simply a colour variation of the species, darker than typical with the strongly red flesh where damaged, but seemingly a rare variety.
Find from November 2023, Hertfordshire at one of my Wendover walks.
I was scouring through my photos and came across this again, after discussing the variety yesterday. I have seen almost no photos of it posted online so it was a super lucky find!
It’s good to be aware of in spite of rarity, as we often say to use staining to help distinguish between Macrolepiota (not staining) and Chlorophyllum (orange-red staining) - but as always, mushroom rules are not absolute. That said, Macrolepiota procera is easily distinguished by the snakeskin stipe (and cap pattern less easily)
