 Species of "Geotrichum" resemble the genera "Trichosporon" and "Protendomycopsis"; however, "Geotrichum" is of ascomycetous affiliation whereas the latter are members of the Basidiomycota.Species of "Geotrichum" are occasionally mistaken for fast growing members of the genus "Dipodascus", which are characterized by irregularly branched, 10–14 μm wide hyphae and the production of single-spored asci.However, unlike "Geotrichum", members of the genus "Dipodascus" lack dichotomous branching of the peripheral hyphae and their growth rates are generally less than 3 mm per day.