Poria fimbrialella (Peck) Sacc. 



1 Microphotograph of cross section through hymenium, showing 



projecting cystidia. x i6o. 



2 Portion of a cross section of hymenium enlarged to show cystidia. 



X 320. 



3 Hyphae from the trama. 



4 Hyphae from the subiculum. 



5 Cystidium from the hymenium of the type collection. 



6 Cystidium from the hymenium of the collection from Ampersand 



pond, N. Y. 



7 Mature spores. 



(See also plate 22, figure 6, for specimen from the type collection). 



Poria griseoalba (Peck) Sacc. 



8 Specimens from the type collection, x i. 



