Merrill, E.D. (1908), On a collection of Plants from the Batanes and Babuyanes Islands. Philippine Journal of Science. Section C, Botany 3(6): 436 [comb. nov.]

basionym: Cephalanthus orientalis L. legitimate

Domin, K. (1929), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 22(89): 1168 [secondary reference]

nomenclatural synonym: Cephalanthus orientalis L. legitimate nomenclatural synonym: Nauclea orientalis (L.) L. legitimate taxonomic synonym: Nauclea macrophylla Blume nom. illeg. taxonomic synonym: Nauclea grandifolia DC. nom. illeg. taxonomic synonym: Nauclea roxburghii G.Don legitimate taxonomic synonym: Platanocarpum cordatum (Roxb.) Korth. legitimate taxonomic synonym: Sarcocephalus cordatus (Roxb.) Miq. legitimate taxonomic synonym: Sarcocephalus leichharditii F.Muell. nom. inval., nom. prov.

Ridsdale, C.E. (1979), A revision of the Tribe Naucleeae s.s. (Rubiaceae). Blumea 24(2): 327 [nomenclatural synonym]

nomenclatural synonym of: Nauclea orientalis (L.) L. legitimate

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Nauclea orientalis (L.) L. legitimate

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