This research examined genotypic differences in morphoagronomic traits among &lsquo;wild cowpea&rsquo; (Vigna vexillata) accessions and related groups in the genus Vigna. The traits were observed under natural, open field conditions at the field experimental station of The Faculty of Agriculture of Padjadjaran University, West Java, Indonesia, between October 2005 and March 2006. sixteen genotypes studied were planted in two replications and arranged in randomized complete block design. The plants of each genotype were grown in a single row plot of 6 m long. Large variations in morpho-agronomic traits were observed between genotypes. Analysis of genotypic differences showed that for certain traits, the V. vexillata accessions were similar to their relatives within the genus Vigna. However, some cultivated forms of V. vexillata from Bali exhibited some distinct differences from related wild genotypes of African origin.