Recently, Bresinsky & Jarosch (Bresinsky et al.1999) created a new bolete genus Austropaxillus to accommodate Southern Hemisphere species of Paxillus, including three New Zealand endemic species described by McNabb (1969). One of McNabb's names, Paxillus aurantiacus, is an illegitimate later homonym; consequently, Bresinsky & Jarosch's binomial Austropaxillus aurantiacus must be treated as a nomen novum dating from 1999 rather than a combinatio nova based on a 1969 basionym (Greuter et al. 2000, Article 58). Thus, the nomen novum Paxillus macnabbii previously published by Singer et al. (1990) has priority, and it is here recombined in Austropaxillus.

Austropaxillus macnabbii (Singer, J.García & L.D.Gómez) Pennycook, comb. nov.ç Paxillus aurantiacus McNabb, N.Z. J. Bot. 7, 357 (1969), nom. illegit., non Ellis 1882. ç Paxillus macnabbii Singer, J.García & L.D.Gómez, Beih. Nova Hedwigia 98, 4 (1990), nom. nov., as "mcnabbii".ç Austropaxillus aurantiacus Bresinsky & Jarosch, in Bresinsky et al., Plant Biology 1, 332 (1999), nom. nov. superfl., as "comb. nov."

NOTES: Index of Fungi 6: 442, 1994, is mistaken in attributing the misspelt epithet "auranticus" to McNabb (1969); the origin of this misspelling is a typographic error in Index of Fungi 3: 561, 1970.