Linnaeus, C. (1 May 1753), Species Plantarum 2: 836 [tax. nov.]

• Type: (not designated).

Linnaeus, C. (1754), Genera Plantarum Edn. 5: 363 [secondary reference]

Labillardière, J.J.H. de (1806), Novae Hollandiae Plantarum Specimen 2(18): 38 [secondary reference]

Bentham, G. (5 January 1867), Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis 3: 461-462 [secondary reference]

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 77 [secondary reference]

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 258 [secondary reference]

Britton, N.L. & Brown, A. (7 June 1913), An Illustrated Flora of the Northern United States, Canada and the British possessions Edn. 2, 3: 355 [secondary reference]

• Lectotype: Eupatorium cannabinum L.

Sulman, F. (1914), A Popular Guide to the Wild Flowers of New South Wales II: 116 [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: 379 [secondary reference]

Farr, E.R., Leussink, J.A. & Stafleu, F.A. in Farr, E.R., Leussink, J.A. & Stafleu, F.A. (ed.) (1979), Index Nominum Genericorum 3: 1297 [secondary reference]

taxonomic synonym: Petalolepis Cass. legitimate

Cronquist, A.J. (1981), An Integrated System of Classification of Flowering Plants: 1025 [secondary reference]

Stanley, T.D. in Stanley, T.D. & Ross, E.M. (1986), Asteraceae. Flora of South-eastern Queensland 2: 504 [secondary reference]

Lander, N.S. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Asteraceae. Flora of the Perth Region 2: 678 [secondary reference]

Cooper, W.E. & Cooper, W.T. (2004), Fruits of the Australian Tropical Rainforest: 82 [secondary reference]

Anderberg, A.A., Baldwin, B.G., Bayer, R.G., Breitwieser, I., Jeffrey, C., Dillon, M.O., Eldenäs, P., Funk, V., Garcia-Jacas, N., Hind, D.J.N., Karis, P.O., Lack, H.W., Nesom, G., Nordenstam, B., Oberprieler, C., Panero, J.J., Puttock, C., Robinson, H., Stuessy, T.F., Susanna, A., Urtubey, E., Vogt, R., Ward, J. & Watson, L.E. in Kubitzki, K. (ed.) (2007), Compositae. The Families and Genera of Vascular Plants 8: 528-529 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 324 [secondary reference]

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - APC [secondary reference]

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

Orchard, A.E., Cross, E.W. & Bayer, R.J. in Wilson, A.J.G. (ed.) (2015), Eupatorium. Flora of Australia 37: 598-599 [secondary reference]

• Etymology: "from Eupator, king of Pontus (Mithridates VI Eupator, 132-63 B.C.), said by Pliny to have employed one of this group of plants in medicine."

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