Gaertner, J. (December 1788), De Fructibus et Seminibus Plantarum 1: 113 [tax. nov.]

• Type: "Ex herbario Banksiano. Habitat cum praecedenti" [i.e. O. aspera].

• Comment: A.L.Jussieu, Ann. Mus. Natl Hist. Nat. 4 (1804) 427 states "in Australasiâ".

Dryander, J.C. in Koenig, K.D.E. & Sims, J. (ed.) (1 September 1806), Chloris Novae Hollandiae; or, Catalogue of the Plants of New Holland and Van Dieman's Island hitherto published, as far as they have come to the knowledge of J. Dryander. Annals of Botany 2(3): 511 [secondary reference]

Sprengel, C.P.J. (1824), Systema Vegetabilium Edn. 17, 1: 385 [doubtful taxonomic synonym]

doubtful taxonomic synonym of: Opercularia hispida Spreng. legitimate

Bentham, G. (5 January 1867), Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis 3: 434 [secondary reference]

taxonomic synonym: Opercularia sessiliflora A.Juss. legitimate

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 75 [secondary reference]

Dixon, W.A. (1906), The Plants of New South Wales: 173 [secondary reference]

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 253 [secondary reference]

Domin, K. (1929), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 22(89): 1181 [secondary reference]

Beadle, N.C.W., Evans, O.D. & Carolin, R.C. (1962), Handbook of the Vascular Plants of the Sydney District and Blue Mountains: 355 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 190 [secondary reference]

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1986), Rubiaceae. Flora of South-eastern Queensland 2: 325, Fig. 46G [secondary reference]

James, T.A. & Allen, W.K. in Harden, G.J. (ed.) (1992), Opercularia. Flora of New South Wales 3: 491, pl.23 APC [secondary reference]

• APC Dist.: Qld, NSW

National Herbarium of New South Wales (2009), PlantNET Flora of New South Wales Online: - [secondary reference]

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