Poria mutans var. tenuis Peck 



i Microphotograph of vertical section through the hymenium. 

 x 1 60. 



2 Spores found free-floating in sectional preparations (see text). 



3 Encrusted hyphae from the subiculum. 



4 Hyphae from the trama. 



•Poria myceliosa Peck 



5 Specimen from the type collection, x 1. 



[42 



i 



