Linnaeus, C. (1 May 1753), Species Plantarum 1: 288 [tax. nov.]

• Type: "Habitat in Virginiae aquosis."

Bailey, F.M. (1902), The Queensland Flora 5: 1644 [secondary reference]

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 559 [secondary reference]

common name: Pickerel weed [n/a]

Aston, H.I. (1973), Aquatic Plants of Australia: 269-270 [secondary reference]

Lowden, R.M. (1973), A revision of the genus Pontederia. Rhodora 75: 450-452 [secondary reference]

• Neotype: "... [Savage, 407.4] P. Kalm (LINN)."

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 57 [secondary reference]

Aston, H.I. in George, A.S. (ed.) (1987), Pontederiaceae. Flora of Australia 45: 53-55, Fig. 31, Map 52 [secondary reference]

taxonomic synonym: Pontederia lanceolata Nutt. legitimate taxonomic synonym: Pontederia cordata var. lanceolata (Nutt.) Griseb. legitimate

Horn, C.N. & Haynes, R.R. (1987), Typification of Pontederia and its Linnaean species names (Pontederiaceae). Taxon 36(3): 621-622 [secondary reference]

• Lectotype: "Reveal (in press) has designated LINN 407.4 as the lectotype of Pontederia cordata. We prefer a specimen rather than an illustration when all things are equal and, therefore, agree with his designation."

• Text: "The designation of a neotype by Lowden (1973) suggests that material seen by Linnaeus is not extant. That suggestion is not correct:"

Stanley, T.D. in Stanley, T.D. & Ross, E.M. (1989), Pontederiaceae. Flora of South-eastern Queensland 3: 52 [secondary reference]

Jacobs, S.W.L. in Harden, G.J. (ed.) (1993), Pontederiaceae. Flora of New South Wales 4: 251 [secondary reference]

taxonomic synonym: Pontederia lanceolata Nutt. legitimate common name: Pickerel Weed [n/a]

Conn, B.J. in Walsh, N.G. & Entwisle, T.J. (ed.) (1994), Hydatellaceae - Pontederia. Flora of Victoria Edn. 1, 2: 636-637, Fig. 127e-g [secondary reference]

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

nomenclatural synonym: Pontederia cordata L. var. cordata legitimate taxonomic synonym: Pontederia lanceolata Nutt. legitimate taxonomic synonym: Pontederia cordata var. lanceolata (Nutt.) Griseb. legitimate

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

Pellegrini, M.O.O., Horn, C.N. & Almeida, R.F. (2018), Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L. Phytokeys 108: 71 [secondary reference]

Percy-Bower, J.M. & Parker, C.M. (28 March 2019), Updates to Western Australia’s vascular plant census for 2018. Nuytsia 30: 13 [secondary reference]

• Text: "Excluded taxon. G.J. Keighery in litt. (02/10/2018)."

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Pontederia cordata L. var. cordata legitimate taxonomic synonym: Pontederia lanceolata Nutt. legitimate taxonomic synonym: Pontederia cordata var. lanceolata (Nutt.) Griseb. legitimate

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

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