Nuttall, T. (1818), The Genera of North American Plants 2: 56 [primary reference]

• Type: Orthocarpus luteus Nutt.

Ewart, A.J. & Sharman, P.J. (1916), Contributions to the Flora of Australia, no. 24. Proceedings of the Royal Society of Victoria 28(2): 231 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 200 [secondary reference]

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