Long-legged Amidella 
Long-spored Dotted Lichen 
Loweomyces fractipes 
Loxospora pustulata 
Lumpy bracket 
Lung Oyster 
Lurid bolete 
Luxuriant ringstalk 
Luxury Caps 
Lycoperdon curtisii 
Lycoperdon flavotinctum 
Lyophyllum littoralis 
Macrocystidia cucumis 
Macrolepiota excoriata 
Macrolepiota macilenta 
Magpie Inkcap 
Mallow Rust 
Many-forked Cladonia 
Many-fruited Pelt Lichen 
Mapledust Lichen 
Marasmiellus pluvius 
Marasmiellus praeacutus 
Marasmius alveolaris 
Marasmius armeniacus