Candolle, A.P. de in Candolle, A.P. de (ed.) (1830), Rubiaceae. Prodromus Systematis Naturalis Regni Vegetabilis 4: 435 [tax. nov.]

• Type: "in Luzon Archipel. Philippinarum. (v. s. in h. Haenke)."

Miquel, F.A.W. (1857), Flora van Nederlandsch Indie 2(2): 181 [basionym]

basionym of: Hedyotis radicans (Bartl. ex DC.) Miq. legitimate

Kuntze, C.E.O. (5 November 1891), Revisio Generum Plantarum 1: 292 [basionym]

basionym of: Oldenlandia radicans (Bartl. ex DC.) Kuntze legitimate

Bremekamp, C.E.B. (1952), Verhandelingen der Koninklijke Nederlandsche Akademie van Wetenschappen, Afdeeling Natuurkunde; Tweede Sectie 48(2): 142 [basionym]

basionym of: Exallage radicans (Bartl. ex DC.) Bremek. legitimate

Halford, D.A. (9 September 1992), Review of the genus Oldenlandia L. (Rubiaceae) and related genera in Australia. Austrobaileya 3(4): 714 [nomenclatural synonym]

nomenclatural synonym of: Hedyotis radicans (Bartl. ex DC.) Miq. legitimate

Gibbons, K.L. (June 2020), Hedyotis, Oldenlandia and related genera (Rubiaceae: Spermacoceae) in Australia: New genera and new combinations in an Asian-Australian-Pacific lineage. Taxon 69(3): 535 [nomenclatural synonym]

nomenclatural synonym of: Exallage radicans (Bartl. ex DC.) Bremek. legitimate

---