Humularia welwitschii var. lundaensis P.A. Duvign. Verdc. [family LEGUMINOSAE], in Kew Bull. 27: 440 (1972); in Kirkia 9: 480 (1974). Type from Dem. Rep. Congo.
Smithia megalophylla Harms [family LEGUMINOSAE], in Bot. Jahrb. Syst. 26: 292 (1899); in Warburg, Kunene-Samb.-Exped. Baum: 262 (1903); in Engler, Pflanzenw. Afrikas [Veg. Erde 9] 3 (1): 618 (1915). Type from Angola.
Geissaspis megalophylla Harms Baker f. [family LEGUMINOSAE], in J. Bot. 46: 114 (1908); Legum. Trop. Africa: 314 (1929).
Geissaspis castroi Baker f. [family LEGUMINOSAE], in Bol. Soc. Brot., sér. 2, 8: 106 (1933). Type from Angola.
Humularia lundaensis P.A. Duvign. [family LEGUMINOSAE], in Bull. Soc. Roy. Bot. Belgique 86: 187 (1954); in F.C.B. 5: 312 (1954). Type from Dem. Rep. Congo.
Humularia megalophylla Harms P.A. Duvign. [family LEGUMINOSAE], in Bull. Soc. Roy. Bot. Belgique 86: 186 (1954). —Torre in C.F.A. 3: 211 (1966).