All members of the class produce basidiocarps and these range in size from tiny cups a few millimeters across to a giant polypore ( `` Phellinus ellipsoideus '' ) greater than several meters across and weighing up to .
All members of this class produce basidiocarps and these range in size from tiny cups a few millimeters across to a giant polypore ( `` Fomitiporia ellipsoidea '' ) greater than several meters across and weighing up to 500 kg .