Thought I would maybe share how I identify mushies..hope I'm right? ..
Discoma mushies are smooth at the edges and might have bubble-like projections on the main body.
Yumas also have bubble like projections on the main body and such projections also occur at the edges.
Rhodactis have more 'spike-like' projections on the side of the body, without any bubble-like projections on the main body.
Florida is rather straightforward...Sure many of you know one when you see one.