Mueller, F.J.H. von (1868), Fragmenta Phytographiae Australiae 6(49): 230 [comb. nov.]

basionym: Trichinium pyramidatum Moq. legitimate

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 29 [secondary reference]

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 73 [secondary reference]

Hopper, S.D., van Leeuwen, S.J., Brown, A.P. & Patrick, S.J. (1990), Western Australia's Endangered Flora: 119, 137 [secondary reference]

Threatened Species and Communities Section, Biodiversity Group, Environment Australia (8 July 1998), Endangered Species Protection Act 1992. Schedules 1, 2 & 3: 29 [secondary reference]

Western Australian Herbarium (2007), FloraBase: the Western Australian Flora Version 2.5: - [secondary reference]

• APC Dist.: WA (presumed extinct)

Davis, R.W. (6 November 2012), Ptilotus christineae is synonymous with the previously Presumed Extinct taxon P. pyramidatus. Nuytsia 22(5): 335 APC [secondary reference]

nomenclatural synonym: Trichinium pyramidatum Moq. legitimate taxonomic synonym: Ptilotus sp. Brixton (C.Tauss 4136) [n/a] taxonomic synonym: Ptilotus christineae R.W.Davis & Tauss legitimate

• APC Dist.: WA

Biggs, L.J. & Parker, C.M. (21 November 2013), Updates to Western Australia's vascular plant census for 2012. Nuytsia 23: 518 [secondary reference]

taxonomic synonym: Ptilotus christineae R.W.Davis & Tauss legitimate

Barrett, Russell & Tay, Eng Pin (2016), Perth Plants: a Field Guide to the Bushland and Coastal Flora of Kings Park and Bold Park Edn. 2: 38 [secondary reference]

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