Kuntze, C.E.O. (5 November 1891), Revisio Generum Plantarum 2: 600 [comb. nov.]

basionym: Phyllanthus rigidulus Müll.Arg. legitimate

Council of Heads of Australasian Herbaria (2009), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Sauropus rigidulus (Müll.Arg.) Airy Shaw legitimate

Barrett, R.L. & Telford, I.R.H. (3 November 2015), Two new species of Phyllanthus from northern Australia and notes on Phyllanthus, Sauropus and Synostemon (Phyllanthaceae) in Western Australia. Nuytsia 26: 160 [nomenclatural synonym]

nomenclatural synonym of: Sauropus rigidulus (Müll.Arg.) Airy Shaw legitimate

Telford, I.R.H., Pruesapan, K., Welzen, P.C. van & Bruhl, J.J. (4 June 2019), Morphological and molecular data show an enlarged tropical Australian radiation in Synostemon (Phyllanthaceae, Phyllantheae) previously concealed by heteromorphic species concepts. Australian Systematic Botany 32(2,3): 172 [nomenclatural synonym]

nomenclatural synonym of: Synostemon rigidulus (F.Muell. ex Müll.Arg.) I.Telford & Pruesapan legitimate

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