Both the genus and the species were described as new to science in 2016 by Alejandra Giraldo and Pedro Willem Crous.

The generic name combines the Latin brunneus ("brown") with the Ancient Greek carpos ("fruit"), while the specific epithet refers to the host genus Banksia.

The type specimen was collected on a cone of Banksia attenuata in Western Australia.

[2] Molecular phylogenetic analysis showed the fungus to be placed in the family Mycocaliciaceae, whose species have a similar morphology.

They have a dark brown, roughly spherical capitulum (a spore-bearing "head" atop the stipe) measuring 150–285 by 125–206 μm.