The amyloid reaction in the genus Polyporus s. str. was re-evaluated based on European species. All structures are inamyloid, except the stem surface (especially the base) in species such as P. ciliatus, P. brumalis, P. anisoporus, P. tricholoma, P. varius, P. coronatus, and P. umbellatus. In P. squamosus, only young stem surface elements are amyloid. P. mori has amyloid elements in the dark stem surface and sometimes weak amyloidity of ligative hyphae. No amyloidity was found in P. badius, P. melanopus, and P. rhizophilus.
Pouzar Z. (1972): Amyloidity in polypores I. The genus Polyporus Mich. ex Fr. – Česká Mykologie 26(2): 82–90.
