Dichomitus eucalypti is a crust fungus that was described as a new species in 1985 by Norwegian mycologist Leif Ryvarden. The fruit body of the fungus measures 1âÂÂ2 cm in diameter, and has a white to pale cream pore surface with small round pores numbering 2âÂÂ3 per millimetre. D. eucalypti has a dimitic hyphal structure, containing both generative and binding hyphae. Generative hyphae are thin walled with clamps, and measure 2.5âÂÂ4 üm in diameter. Found in the context, the binding hyphae are solid, hyaline, and measure 2âÂÂ5 üm. Spores are more or less cylindrical, thin-walled and hyaline, and have dimensions of 7âÂÂ8.5 by 3âÂÂ4 üm.
The type was collected in George Gill Range (Northern Territory, Australia), where it was growing on river red gum (Eucalyptus camaldulensis). At the time of its description, D. eucalypti was, in addition to D. epitephrus and D. leucoplacus, the third species of Dichomitus found in Australia.