Comment:Mueller indicates that his genus name Petalogyne is intended as a replacement for "Petalostylis R.Br., non Griesebach". However, Grisebach's name is Petasostylis [in A.L.P.P. de Candolle, Prodr. 9: 71 (1845); Gentianaceae] so Mueller's publication of a new generic name for Brown's taxa is illegitimate and superfluous.