THE SEED macro-morphological features including seed shape,  ……...colour, size, areole shape as well as the testa sculpturing patterns examined by scanning electron microscopy (SEM) and SDS-PAGE profiles of seed proteins of 14 species and one subspecies; representing eight genera of Mimosoideae were investigated. A key to the taxa studied was provided based on the recorded macro-morphological features and the testa sculpturing patterns as viewed under SEM. The phenogram generated from the numerical analysis of the scored characters from SDS-PAGE profiles of seed proteins was beneficial to discuss some of the fore-mentioned opinions concerning the taxonomic status of members of Mimosoideae.