Candolle, A.P. de in Candolle, A.P. de (ed.) (1830), Rubiaceae. Prodromus Systematis Naturalis Regni Vegetabilis 4: 478-479 [tax. nov.]

• Type: Eumachia carnea (G. Forst.) DC.

Taylor, C.M., Razafimandimbison, S.G., Barrabé, L., Jardim, J.G. & Barbosa, M.R.V. (2017), Eumachia expanded, a pantropical genus distinct from Psychotria (Rubiaceae, Palicoureeae). Candollea 72(2): 292 [secondary reference]

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - APC [secondary reference]

• APC Dist.: Qld

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