I’m trying to practise my identification skills - the photos are of some younger ones so I’m also basing this on some older ones nearby that definitely had Decurrent Gills and a White Spore print.
Are you asking for second opinions? It’s really difficult to say from these pictures. Did you take a picture of the older ones?
Yes, i was hoping to check my guess, but I understand it’s not much to go on. Maybe that’s something I’m trying to understand more - the young ones often look radically different to the older ones. Is there a way to tell if a mushroom has fully formed?
Yes, it’s very difficult to recognize young mushrooms. I think it’s a really nice way to think of mushrooms as mutable living things, and learning to recognize them at different points in their lifecycle (rather than comparing them to a random snapshot) is a lot of fun.
Is there a way to tell if a mushroom has fully formed?
For me it has been helpful to cut them open lengthwise to understand how the cap takes shape and opens up, rings are formed etc.
That said, some type of Armillaria seems like a plausible guess to me from the pictures.