Poria marginella (Peck) Sacc. 



1 Specimens from the type collection, x i. 



2 Microphotograph of cross section of the hymenium showing 



setae, as at a. x i6o. 



3 Small section of the hymenium enlarged to show setae, b. x 320. 



4 Setae from the hymenium, as obtained in crushed preparations. 



5 Mature spores. 



6 Hyphae from the subiculum and the trama. 



138 



