Euphorbiaceae Juss.
Pseudanthus orbicularis (Müll.Arg.) Halford & R.J.F.Hend. , legitimate, scientific
Halford, D.A. & Henderson, R.J.F. (3 December 2003), Studies in Euphorbiaceae A.L.Juss. sens. lat. 5. A revision of Pseudanthus Sieber ex Spreng. and Stachystemon Planch. (Oldfieldioideae Kohler & Webster, Caletieae Mull.Arg.). Austrobaileya 6(3): 507-508, Map 6 [comb. nov.]
basionym: Caletia divaricatissima var. orbicularis Müll.Arg. legitimate nomenclatural synonym: Caletia orientalis var. orbicularis (Müll.Arg.) Baill. legitimate nomenclatural synonym: Pseudanthus divaricatissimus var. orbicularis Benth. legitimate taxonomic synonym: Pseudanthus divaricatissimus var. orbicularis Ewart nom. illeg.
Council of Heads of Australasian Herbaria (2009), Australian Plant Census: - APC [secondary reference]
orthographic variant: Pseudanthus divaricatissimus var. orbiculare Benth. orth. var. nomenclatural synonym: Caletia divaricatissima var. orbicularis Müll.Arg. legitimate nomenclatural synonym: Caletia orientalis var. orbicularis (Müll.Arg.) Baill. legitimate nomenclatural synonym: Pseudanthus divaricatissimus var. orbicularis Benth. legitimate taxonomic synonym: Pseudanthus divaricatissimus var. orbicularis Ewart nom. illeg. misapplication: Pseudanthus divaricatissimus (Müll.Arg.) Benth. legitimate by Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Euphorbiaceae. Flora of Victoria 4: 73-74, Fig. 11e
  • APC Dist.: NSW, Vic