Poria radiculosa (Peck) Sacc. 



i Major portion of the material in the type collection, x l. 



2 Immature basidia. 



3 Microphotograph of vertical section through the hymenium. 



x 1 60. 



4 Hyphae from the subiculum. 



5 Hyphae from the trama. 



6 Mature spores. 



15-2 



