AGARIC S-T -  Produce spores on the underside of their caps from gills, whereas Boletes, that can be similar in look, produce spores from sponge-like tubes

EXPLANATION FOR COMMON TOADSTOOL AND FUNGI NAME

Tricholoma flavovirens [Man on Horseback] : Haven't a clue why it's named this

Tricholoma saponaceum [Soap Tricholoma] : Very slippery, soapy feel to the cap

Tricholomopsis rutilans [Plums and Custard] : Cap has plum-purple colour on a yellow background