Decaisne, J. in Candolle, A.L.P.P. de (ed.) (1844), Asclepiadaceae. Prodromus Systematis Naturalis Regni Vegetabilis 8: 585 [comb. nov.]

basionym: Tweedia coerulea D.Don legitimate

Anderson, R.H. (8 August 1939), The naturalised flora of New South Wales (excluding Gramineae). Contributions from the New South Wales National Herbarium 1(1): 27 [secondary reference]

nomenclatural synonym: Tweedia coerulea D.Don legitimate

Beadle, N.C.W., Evans, O.D. & Carolin, R.C. (1962), Handbook of the Vascular Plants of the Sydney District and Blue Mountains: 352 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 70 [nomenclatural synonym]

nomenclatural synonym of: Tweedia coerulea D.Don legitimate

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1986), Asclepiadaceae. Flora of South-eastern Queensland 2: 308 [nomenclatural synonym]

nomenclatural synonym of: Tweedia coerulea D.Don legitimate

Harden, G.J. & Williams, J.B. in Harden, G.J. (ed.) (1992), Asclepiadaceae. Flora of New South Wales 3: 430 [nomenclatural synonym]

nomenclatural synonym of: Tweedia coerulea D.Don legitimate

Forster, P.I. (1 September 1994), Typification of Tweedia coerulea and T. versicolor (Asclepiadaceae). Austrobaileya 4(2): 289 [secondary reference]

nomenclatural synonym: Tweedia coerulea D.Don legitimate taxonomic synonym: Tweedia versicolor Hook. legitimate

Forster, P.I. in Orchard, A.E. (ed.) (1996), Asclepiadaceae. Flora of Australia 28: 213, Fig. 68, Map 243 [secondary reference]

nomenclatural synonym: Tweedia coerulea D.Don legitimate taxonomic synonym: Tweedia versicolor Hook. legitimate

Jessup, L.W. (22 April 2002), Flora of South-eastern Queensland Volume 2 Changes to names or status of taxa: - [secondary reference]

nomenclatural synonym: Tweedia coerulea D.Don legitimate

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - [secondary reference]

orthographic variant: Oxypetalum caeruleum Decne. orth. var. nomenclatural synonym: Tweedia coerulea D.Don legitimate taxonomic synonym: Tweedia versicolor Hook. legitimate

• APC Dist.: Qld (naturalised), NSW (naturalised), Vic (doubtfully naturalised)

Council of Heads of Australasian Herbaria (29 September 2022), Australian Plant Census: - APC [secondary reference]

orthographic variant: Oxypetalum caeruleum Decne. orth. var. nomenclatural synonym: Tweedia coerulea D.Don legitimate taxonomic synonym: Tweedia versicolor Hook. legitimate

• APC Dist.: Qld (naturalised), NSW (naturalised), ACT (naturalised), Vic (doubtfully naturalised)

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