Obbens, F.J. (15 October 2019), Calandrinia monosperma and C. uncinella (Montiaceae), two new indehiscent species from Western Australia. Nuytsia 30: 238-242, Figs 1, 2, 3 (map) [tax. nov.]

• Type: "Site is c. 3.8 km E along Talawana Track from the turnoff into Balfour Downs homestead, Pilbara region, Western Australia, 1 June 2004, F. Obbens & B. Bromilow FO 32/04 (holo: PERTH 06609740; iso: CANB)."

taxonomic synonym: Calandrinia monosperma Syeda manuscript name taxonomic synonym: Calandrinia sp. The Pink Hills (F.Obbens FO 19/06) WA Herbarium [n/a]

• Etymology: "The epithet for this species is derived from the Greek mono– (one–) and –sperma (–seeded) in reference to its one-seeded capsules."

Parker, C.M. & Percy-Bower, J.M. (10 December 2019), Updates to Western Australia’s vascular plant census for 2019. Nuytsia 30: 344 [secondary reference]

taxonomic synonym: Calandrinia sp. The Pink Hills (F.Obbens FO 19/06) WA Herbarium [n/a]

Hershkovitz, M.A. (21 September 2020), Rumicastrum Ulbrich (Montiaceae): a beautiful name for the Australian calandrinias. Phytologia 102(3): 120 [basionym]

basionym of: Rumicastrum monospermum (Syeda ex Obbens) Hershk. legitimate

Hershkovitz, M.A. (September 2023), Notes on the taxonomy of Parakeelya Hershk. (Montiaceae). International Journal of Scientific Development and Research 8(9): 119 [basionym]

basionym of: Parakeelya monosperma (Syeda ex Obbens) Hershk. legitimate

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