Linnaeus, C. (1 May 1753), Species Plantarum 1: 209 [tax. nov.]

• Type: "Habitat in Gallia Narbonensi, Hispania."

Mueller, F.J.H. von (1888), Plants, hitherto immigrated and naturalized in Victoria, with indications of their nativity and English popular names. Key to the System of Victorian Plants 1: 535 [secondary reference]

Black, J.M. (December 1926), Meliaceae - Scrophulariaceae. Flora of South Australia 3: 462, Fig. 190 [secondary reference]

common name: Greater Periwinkle [n/a]

Raphael, T.D. (1955), Tasmanian garden escapes. Papers and Proceedings of the Royal Society of Tasmania 89: 149 [secondary reference]

Black, J.M. & Robertson, E.L. (1957), Flora of South Australia Edn. 2, 4: 696, Fig. 986 [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: 350 [secondary reference]

common name: Blue Periwinkle [n/a]

Curtis, W.M. (1967), Angiospermae: Plumbaginaceae to Salicaceae. The Student's Flora of Tasmania 3: 472-473 [secondary reference]

common name: Periwinkle [n/a]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 68 [secondary reference]

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 141 [secondary reference]

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1986), Apocynaceae. Flora of South-eastern Queensland 2: 302, Fig. 43K [secondary reference]

common name: Blue Periwinkle [n/a]

Rye, B.L. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Apocynaceae. Flora of the Perth Region 1: 524 [secondary reference]

common name: Blue Periwinkle [n/a]

Harden, G.J. & Williams, J.B. in Harden, G.J. (ed.) (1992), Apocynaceae. Flora of New South Wales 3: 518 [secondary reference]

common name: Periwinkle [n/a]

Green, P.S. in Wilson, A.J.G. (ed.) (1994), Norfolk Island & Lord Howe Island. Flora of Australia 49: 279-280 [secondary reference]

Forster, P.I. in Orchard, A.E. (ed.) (1996), Apocynaceae. Flora of Australia 28: 124, Map 160 APC [secondary reference]

common name: Periwinkle [n/a]

• APC Dist.: WA (naturalised), SA (naturalised), Qld (naturalised), NSW (naturalised), LHI (naturalised), NI (naturalised), ACT (naturalised), Vic (naturalised), Tas (naturalised)

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Apocynaceae. Flora of Victoria 4: 325, Fig. 63d [secondary reference]

common name: Blue Periwinkle [n/a]

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Dicotyledons. Flora of the South West 2: 491 [secondary reference]

common name: Blue Periwinkle [n/a]

Taplin, R.L. & Symon, D.E. (29 September 2008), Remnant horticultural plants at the site of the former Newman's Nursery, 1854-1932. Journal of the Adelaide Botanic Gardens 22: 93 [secondary reference]

common name: Blue Periwinkle [n/a]

Barrett, Russell & Tay, Eng Pin (2016), Perth Plants: a Field Guide to the Bushland and Coastal Flora of Kings Park and Bold Park Edn. 2: 266-267, photos 12-13 [secondary reference]

common name: Blue Periwinkle [n/a]

de Salas, M.F. & Baker, M.L. (2016), Tasmanian vascular plant census. A Census of the Vascular Plants of Tasmania, including Macquarie Island: 9 [secondary reference]

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