Ivory waxy cap 
Ivy Anthracnose 
Jack O' Lantern Mushroom 
Jelly baby 
Jelly Drops 
Jewelled Amanita 
Juniper Disco 
Kangaroo Thorn Gall Rust 
King Alfred's Cake 
King Stropharia 
King Trumpet Mushroom 
Kluyveromyces lactis 
Kuehneromyces marginellus 
Laccaria lateritia 
Lachnella alboviolascens 
Lachnellula agassizii 
Lachnellula arida 
Lachnum bicolor 
Lacrymaria velutina 
Lactarius 
Lactarius areolatus 
Lactarius argillaceifolius 
Lactarius atlanticus 
Lactarius atroviridis