Tyromyces toatoa

Tyromyces toatoa is a species of poroid fungus found in New Zealand. It was described as a new species by G. H. Cunningham in 1965. The type collections were made by Joan Dingley, who found the fungus in Taupō, Mount Ruapehu, near Whakapapa Stream. She found it fruiting on the bark of dead branches and trunks of Phyllocladus alpinus, at an elevation of 1000 m. The specific epithet toatoa evokes the Māori name of the host plant.

Description
The fungus is characterized by its dark surface and thin cuticle of the small, effused-reflexed caps. The spores of T. toatoa are more or less sausage-shaped (suballantoid), measuring 4–5 by 1.5–2 μm.