Obbens, F.J., Hancock, L.P., Edwards, E. & Thiele, K.R. (8 June 2017), Calandrinia holtumii (Portulacaceae), a new and unusual species from arid Western Australia. Nuytsia 28: 218-222, Figs 1, 2, 3 (map) APC [tax. nov.]

• Type: "Mulla Mulla Flat, Coolcalalaya Road, Shire of Mullewa, along the road from Coolcalalaya Homestead to Yallalong Homestead, c. 17.7 km west-south-west of the New Forest Yallalong Road junction, Western Australia, 6 October 2004, F. Hort, J. Hort & J. Shanks 2349 (holo: PERTH 06873928; iso: AD, CANB, MEL)."

taxonomic synonym: Calandrinia sp. Black angular seeds (A.A.Mitchell PRP 1661) WA Herbarium [n/a]

• APC Dist.: WA

• Etymology: "The epithet honours Prof. Joseph Holtum of James Cook University, Townsville, Australia, who has pioneered research on CAM photosynthesis including work within the Australian flora..."

Parker, C.M. & Percy-Bower, J.M. (22 March 2018), Updates to Western Australia’s vascular plant census for 2017. Nuytsia 29: 5 [secondary reference]

taxonomic synonym: Calandrinia sp. Black angular seeds (A.A.Mitchell PRP 1661) WA Herbarium [n/a]

Hershkovitz, M.A. (21 September 2020), Rumicastrum Ulbrich (Montiaceae): a beautiful name for the Australian calandrinias. Phytologia 102(3): 119 [basionym]

basionym of: Rumicastrum holtumii (Obbens & L.P.Hancock) Hershk. legitimate

Hershkovitz, M.A. (September 2023), Notes on the taxonomy of Parakeelya Hershk. (Montiaceae). International Journal of Scientific Development and Research 8(9): 118 [basionym]

basionym of: Parakeelya holtumii (Obbens & L.P.Hancock) Hershk. legitimate

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