Not to be considered as synonym of Peperomia succulenta C.DC. as was published by Callejas, 2001. Peperomia succulenta exibits very variable leaves, the basal ones small and obovate with an obtuse apex, the apical ones 2-3 times as large, more oblanceolate and with a more acuminate apex. Although Peperomia collocata may also exibit variation in the size of the leaves they are almost elliptic and more homogeneous in their shape [Mathieu 2006, pers. comm.].