Lobaria virens 
Lobariella pallida 
Lobster mushroom 
Long-spored Dotted Lichen 
Loxospora pustulata 
Many-forked Cladonia 
Many-fruited Pelt Lichen 
Mapledust Lichen 
Mauve Elfcup 
Mealy Forked Lichen 
Mealy Pixie Cup 
Melanelixia fuliginosa 
Melanelixia subaurifera 
Melogramma gyrosum 
Membranous Pelt Lichen 
Methuselah's Beard Lichen 
Methuselahs beard lichen 
Mitrula elegans 
Morchela populiphila 
Morchella brunnea 
Morchella conica 
Morchella elata 
Morchella esculenta 
Morchella frustrata