perhaps that blackened “top” is really the bottom? Verpas are hollow in age…
texture in hand should also be a tip-off.
and of course, when in doubt, save the specimen! a quick pass under the scope woulda told ya fer sure…
your “skirt” is just the cap slipped down the stipe.
mushrooms take great glee in faking us out! gotta have some laughs at human expense when yur a lowly fungus. ;)