White velvety cap

CAP:
3 cm diameter,
velvety feel,
one is completely white,
other mostly white, but has orangish/ brown spot,
both had weird cap-like thing on top. wart-like but not quite. unsure,
convex to shield shaped,
GILLS:
free,
white,
STIPE:
curved,
volva present,
OTHER:
rather fragile,
SPORES:
cinnamon brown (see last picture for print)