Gagnebin, A. (1755), Observations faites sur le systeme des Autheurs de Botanique & sur l'Ophris minima. Acta Helvetica, physico mathematico-anatomico botanico medica 2: 59 [tax. nov.]

• Type: (not designated).

Black, J.M. (January 1948), Casuarinaceae-Euphorbiaceae. Flora of South Australia Edn. 2, 2: 481 [secondary reference]

• Etymology: "From haj, the Arabic and Aramaic name of the plant, with the Arabic definite article preferred"

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 118 [secondary reference]

Gardner, C.L. in Harden, G.J. (ed.) (1991), Alhagi. Flora of New South Wales 2: 441-442 [secondary reference]

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1996), Fabaceae. Flora of Victoria 3: 697 [secondary reference]

Gardner, C.L. in Harden, G.J. (ed.) (2002), Alhagi. Flora of New South Wales Revised Edition 2: 609 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 26 [secondary reference]

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

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

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