= Dianthera debilis Forssk.; Fl. Aegypt.-Arab. 9 (1775)
= Ecbolium debile (Forssk.) Kuntze; Revis. Gen. Pl. 2: 980 (1891)
= Gendarussa debilis (Forssk.) Nees; Linnaea 16: 302 (1842)
= Justicia alba Nees; Prodr. [A.P. de Candolle] 11: 731 (1847), nom. illeg.
= Meiosperma debile (Forssk.) I.Darbysh. & E.A.Tripp; Kew Bull. 77: 257 (2022), isonym
= Justicia debilis (Forssk.) Lam.; Encycl. [J.Lamarck et al.] 1: 633 (1785)
= Justicia debilis (Forssk.) Vahl; Symb. Bot. [Vahl] 2: 15 (1791), isonym
= Justicia gregorii S.Moore; J. Bot. 32: 138 (1894)
= Justicia rupestris Hochst. ex Nees; Prodr. [A.P. de Candolle] 11: 439 (1847), pro syn.
= Justicia somalensis Franch.; Sert. Somal. [Révoil, ed.] 53 (1882) (tentative synonym)
= Monechma bracteatum var. hirsutior C.B.Clarke; Fl. Trop. Afr. [Oliver et al.] 5: 215 (1900)
= Monechma bracteatum var. strictum C.B.Clarke; Fl. Trop. Afr. [Oliver et al.] 5: 215 (1900)
= Monechma debile (Forssk.) Nees; Prodr. [A.P. de Candolle] 11: 411 (1847)
= Monechma debile var. bracteosum Nees; Index Sem. (Breslau) 1845: 3 (1846)
= Monechma troglodyticum Chiov.; Bull. Misc. Inform. Kew 1941: 174 (1941)