Linnaeus, C. (1 May 1753), Species Plantarum 2: 582 [tax. nov.]

• Type: (not designated).

Linnaeus, C. (1754), Genera Plantarum Edn. 5: 253 [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: 122 [secondary reference]

• Lectotype: Ballota nigra L.

Willis, J.H. (1973), A Handbook to Plants in Victoria Edn. 2, 2: 593 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 136 [secondary reference]

Conn, B.J. in Harden, G.J. (ed.) (1992), Lamiaceae. Flora of New South Wales 3: 638-639 [secondary reference]

Conn, B.J. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Lamiaceae. Flora of Victoria 4: 434 APC [secondary reference]

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

Harley, R.M., Atkins, S., Budantsev, A.L., Cantino, P.D., Conn, B.J., Grayer, R., Harley, M.M., de Kok, R., Krestovskaja, T., Morales, R., Paton, A.J., Ryding, O. & Upson, T. in Kubitzki, K. (ed.) (2004), Labiatae. The Families and Genera of Vascular Plants 7: 226 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 88 [secondary reference]

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