Xeromphalina fulvipes 
Xerula australis 
Xerula radicata 
Xylobolus subpileatus 
Yellow American Blusher 
Yellow Coral Fungus 
Yellow Cortinarius 
Yellow Fieldcap 
Yellow knight 
Yellow Navel 
Yellow swamp russula 
Yellow unicorn Entoloma 
Yellow-centered Waxcap 
Yellow-cracked bolete 
Yellow-dust Amanita 
Yellow-staining milkcap 
Yellow-staining mushroom 
Yellowdrop Milkcap 
Yellowfoot 
Yellowfoot bolete 
Yellowfoot Dapperling 
Yellowleg Bonnet 
Yew Club 
Zeller's Bolete