Salted Shield Lichen 
Sarcoscypha austriaca 
Sarea difformis 
Sawadaea tulasnei 
Scaly Pelt Lichen 
Scarlet Cup 
Scrambled-egg lichen 
Script Lichen 
Scutellinia umbrorum 
Sea Ivory 
Septoria oenotherae 
Shingled rock shield lichen 
Shrubby Cup Lichen 
Slate grey saddle 
Small Dung Button 
Smokey-eyed Boulder Lichen 
Smooth Horn Lichen 
Smooth lungwort 
Smooth Rock Tripe 
Smooth-footed Powderhorn 
Snaketongue Truffleclub 
Snow Morel 
Soft Strap Lichen 
Sooty Cup