Boissier, P.E. (1839), Voyage Botanique dans le midi de l'Espagne 1: 357, t. 108 [tax. nov.]

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

• APC Comment: Australian plants may be referable to O. nervosum subsp. castellanum G.González Sierra, Perez Morales, Penas & Rivas Mart. (A.R.Bean, pers. comm. 2007).
• APC Dist.: Vic (naturalised)

Council of Heads of Australasian Herbaria (2019), Australian Plant Census: - APC [secondary reference]

• APC Comment: A European taxon not known to be established in Australia (see A.R.Bean in A.J.G.Wilson (ed.), Fl. Australia 37: 63 (2015)).

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