Smoky polypore 
Smoky-brown Clitocybe 
Smoky-Gilled Hypholoma 
Smooth Cage Fungus 
Smooth chanterelle 
Smooth Horn Lichen 
Smooth lungwort 
Smooth Rock Tripe 
Smooth-footed Powderhorn 
Snakeskin Grisette 
Snaketongue Truffleclub 
Snow Fungus 
Snow Morel 
Snowy Waxcap 
Soap-scented toadstool 
Soft puffball 
Soft Slipper 
Soft Strap Lichen 
Sooty Cup 
Sordaria fimicola 
Sour Cap Suillus 
Southern Cinnabar Polypore 
Southern Cinnabar Polypore 
Southern Soldiers Lichen