When revising the genus Oxyporus from the herbarium of the National Museum in Prague (PRM), the author found two collections from Czechoslovak localities which he identified as Oxyporus philadelphi (Parm.) Ryv., new for Czechoslovak mycoflora. The correctness of the determination was confirmed by comparative study of herbarium specimens collected by E. Parmasto in Estonia and Turkmenia. A short description of this rare pore fungus is given and attention is drawn to its remarkable similarity with Schizopora radula and Ceriporia reticulata. Microscopically, Oxyporus philadelphi is very similar to O. corticola and its pileate form O. ravidus, but it differs by smaller spores.
Vampola P. (1992): Oxyporus philadelphi, a new polypore of the Centraleuropean mycoflora. – Česká Mykologie 45(4): 150–154.
