Puccinia vernoniae 
Pucciniastrum goeppertianum 
Punctelia rudecta 
Punctelia subrudecta 
Purple Brittlegill 
Purple coral 
Purple cortinar 
Purple Fuzz 
Purple Pinwheel 
Purple Pouch Fungus 
Purple toothed resupinate 
Purple-and-White Deceiver 
Purple-bloom Russula 
Purple-gilled Waxy Cap 
Purple-Spored Puffball 
Purpureocillium atypicola 
Pycnoporellus fulgens 
Pyramid Builder Lepidella 
Pyronema omphalodes 
Pyrrhospora varians 
Pyxine sorediata 
Questionable Stropharia 
Radulomyces confluens 
Radulomyces copelandii