Agaricus? Inky v Woody?

[Steve Wurzel]

I think I've narrowed this ID down to Agaricus moelleri - Inky Mushroom , but some features don't match for an ID I'm confident with.

Reading through various descriptions of Agaricus silvicola - Wood Mushroom versus Agaricus moelleri - Inky Mushroom they seem remarkably similar, main differences appear to be toxicity (one being poisonous the other good edible ) smell, taste and season, so any diagnostic differences between the two that you know of would be appreciated.



Note the yellow stain on the cut section, I have seen what I have previously ID'd as Agaricus moelleri - Inky Mushroom growing in these same woods (21st Sept 2008) , but the yellow staining was far more noticeable on that example.

Habitat: mixed woodland, on leaf litter or up turned tree stump roots
Smell: mushroomy, pleasant
Cap: 100mm

Any comments appreciated