Tate, R. (1885), Descriptions of New Species of South Australia Plants. Transactions, proceedings and report, Royal Society of South Australia 7: 69 [tax. nov.]

• Type: "Sandy heath-ground on the elevated central part of Dudley Peninsular, Kangaroo Island, flowering in November. R. Tate."

Black, J.M. (December 1926), Meliaceae - Scrophulariaceae. Flora of South Australia 3: 437 [secondary reference]

Black, J.M. (1952), Flora of South Australia Edn. 2, 3: 653 [secondary reference]

Jessop, J.P. (19 December 1977), Endangered species in the South Australian native vascular flora. Journal of the Adelaide Botanic Gardens 1(2): 137 [secondary reference]

State Herbarium of South Australia (2008), Fact sheets. The Electronic Flora of South Australia: - [secondary reference]

common name: Spreading Pennywort [n/a]

• APC Dist.: SA

Council of Heads of Australasian Herbaria (2016), Australian Plant Census: - APC [secondary reference]

taxonomic synonym: Hydrocotyle crassiuscula Tate nom. inval., nom. nud. taxonomic synonym: Hydrocotyle crassiuscula F.Muell. nom. inval., nom. nud.

• APC Dist.: SA

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