Ptychomitriaceae Schimp.
Brachysteleum acutifolium (Hook.f. & Wilson) Hampe , legitimate, scientific
Mueller, F.J.H. von (1881), Fragmenta Phytographiae Australiae, Supplementum ad Volumen Undecimum: 110 [comb. nov.]
basionym: Ptychomitrium acutifolium Hook.f. & Wilson legitimate