Mitochondrial small subunit ribosomal DNAs were sequenced and phylogenetica
lly analyzed for Trametes and related genera of Ryvarden's Trametes group.
Parsimony and distance analyses indicated that most of trimitic genera with
white rotting habit of the Trametes group clustered within a single clade,
suggesting that they may have originated from a common ancestor. The phylo
genetic position and generic placement of Trametes consors was uncertain as
yet. Trametes trogii grouped with Coriolopsis gallica and indicated that c
olor of the basidiocarp is a poor character at generic level. Nucleotide di
fferences between Daedaleopsis confragosa and D. tricolor were quite few an
d both species closely grouped together in a same clade, thus supporting th
at D. tricolor might be an ecotype of D. confragosa.