Linnaeus, C. (1 May 1753), Species Plantarum 1: 444 [tax. nov.]

• Type: (not designated).

Linnaeus, C. (1754), Genera Plantarum Edn. 5: 204 [secondary reference]

Vail, A.M. & Rydberg, P.A. (1907), North American Flora: 116 [secondary reference]

• Lectotype: Peganum harmala L.

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): 24 [secondary reference]

Black, J.M. (January 1948), Casuarinaceae-Euphorbiaceae. Flora of South Australia Edn. 2, 2: 491 [secondary reference]

• Etymology: "Greek peganon, rue, from a supposed resemblance"

Cronquist, A.J. (1981), An Integrated System of Classification of Flowering Plants: 819, 820 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 211 [secondary reference]

Wilson, K.L. in Harden, G.J. (ed.) (1992), Peganaceae. Flora of New South Wales 3: 15 [secondary reference]

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Zygophyllaceae. Flora of Victoria 4: 205 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 640 APC [secondary reference]

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

Barker, R.M. in Wilson, A.J.G. (ed.) (2013), Zygophyllaceae. Flora of Australia 26: 514 [secondary reference]

• Etymology: "from peganon, the Greek work for rue, a medicinal herb to which this has a resemblance, but no relationship."

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