The genus Hyphodontia in the Patagonian Andes forests of Argentina

The genus Hyphodontia is reviewed for southern Argentina from specimens gathered on Nothofagus spp., Austrocedrus chilensis, Drymis winteri, Maytenus magellanica and Berberis ilicifolia. Sixteen species are reported, five of which are new taxa, namely, Hyphodontia crassisipora, H. gamundiae, N. hjortstamii, H. magnifica and H. pumilia. A new name and new combinations are proposed for names of species not found in the area but similar to some of the described taxa: Hyphodontia cunninghamii nom. nov., H. subscopinella comb. nov. and N. rickii comb. nov. Several of the new taxa have thick-walled spores that may be cyanophilous and metachromatic. These characters, typical of the genus Hypochnicium, are shown to fit within Hyphodontia, given other morphological features typical of the genus, i.e., hyphal features, basidiome construction, and morphology of cystidia and basidia. A dichotomous key to the sixteen taxa in Patagonia is provided.