Type: [East of Kalbarri] Western Australia [precise locality withheld for conservation reasons], 19 September 2018, C.J. French CJF 12549 (holo: PERTH 09183043)."
Etymology:"The specific epithet is from the Latin argillaceus (growing on clay), alluding to the preferred habitat of the species in or around low, winter-wet, brown clay pans."