Drew Minnis and others recognize that “Pluteus cervinus” is a group of species that needs work, at least in North America.

Pluteus petasatus is paler and typically has a darker center and becomes scaly. Pluteus pellitus has a smooth cap that is white or mostly white.

I found identically looking fungi in my yard (pale color overall, shiny, radially silky and rather fleshy pileus without large scales, appressed long pale fibrils on stipe) and they turned out to be… somewhere close to (my notion of) P. pellitus: microscopically they had rather small spores (roughly 4-5 × 6-7 µm), some clamps here and there (at bases of some cheilocystidia, on some subpellis elements, in stipe trama, etc.), rather thin and “noodle-like” hyphae of the pileipellis and pleurocystidia with relatively simple hooks.

I’m confused :)