Hexagonal-pored polypore 
Hexagonia tenuis 
Hickory Candlesnuff Fungus 
Hintapink 
Hoary Rosette Lichen 
Hohenbuehelia grisea 
Hohenbuehelia mastrucata 
Hohenbuehelia unguicularis 
Honey fungus 
Honey Waxcap 
Honeycomb Lichen 
Honeysuckle Leaf Blight 
Hooded Bone Lichen 
Hooded false morel 
Hormomyces aurantiacus 
Horsehair Parachute 
Humidicutis mavis 
Humpback 
Humpback inkcap mushroom 
Hydnellum aurantiacum 
Hydnellum spongiosipes 
Hydnum subrufescens 
Hydropus marginellus 
Hydropus praedecurrens