Quadrella isthmensis (Eichler) Hutch. Quadrella isthmensis (Eichler) Hutch., Gen. Fl. Pl. 2: 308. 1967 sec. Cornejo 2018≡Capparis isthmensis Eichler, Fl. Bras. (Martius) 13(1): 269-270. 1865 syn. sec. Cornejo 2018