Bentham, G. in Hooker, W.J. (1 July 1836), Synopsis of the Buchnereae, a tribe of Scrophulariaceae. Companion to the Botanical Magazine 1(12): 373 [comb. nov.]

basionym: Manulea heterophylla L.f. legitimate

Levyns, M.R.B. (1939), Some changes in nomenclature. 1. Journal of South African Botany 5: 37 [nomenclatural synonym]

nomenclatural synonym of: Polycarena heterophylla (L.f.) Levyns legitimate

Barker, W.R. in Jessop, J.P. & Toelken, H.R. (ed.) (1986), Scrophulariaceae. Flora of South Australia Edn. 4, 3: 1291 [nomenclatural synonym]

nomenclatural synonym of: Polycarena heterophylla (L.f.) Levyns legitimate

---