Millspaugh, C.F. (1913), Publications of the Field Columbian Museum, Botanical Series: 358 [tax. nov.]

• Type: "FLORIDA, in pine lands near Miami; John K.Small 2286, November, 1904." (holo: NY)

Dressler, R.L. (1957), Contributions of the Gray Herbarium of Harvard University 182: 152 [basionym]

basionym of: Pedilanthus tithymaloides subsp. smallii (Millsp.) Dressler legitimate

Steinmann, V.W. (2003), The submersion of Pedilanthus into Euphorbia (Euphorbiaceae). Acta Botanica Mexicana 65: 50 [basionym]

basionym of: Euphorbia tithymaloides subsp. smallii (Baill.) V.W.Steinm. legitimate

Council of Heads of Australasian Herbaria (2009), Australian Plant Census: 152 [nomenclatural synonym]

nomenclatural synonym of: Pedilanthus tithymaloides subsp. smallii (Millsp.) Dressler legitimate

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Euphorbia tithymaloides subsp. smallii (Baill.) V.W.Steinm. legitimate

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