 "T. rhoadsiae", found in the southeastern United States, has a lighter-coloured cap that is smaller, up to in diameter.The edible "T. indecisus" and "T. ferrugineus" can be confused with "T. felleus", but have less reticulated stalks.The dimensions of the spores of the Australian species "T. brevisporus" range from 9.2 to 10.5 by 3.5 to 3.9 μm.