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SUMMARY
The work refers on karyotypic analysis of mitotic chromosomes carried out on 11 wild taxa of Vigna unguiculata (L.) Walpers, by means of image analysis. Low degree in karyological variability was found. The results are in agreement with those obtained through hybridisation investigations carried out between the cultigen and its wild relatives. The data further confirm that despite cowpea is characterised by a high morphological variability, such a diversity is not accompanied though by similar chromosomal variation. The work also indicates the possibility to distinguish each accession thanks the presence of «marker chromosomes». For each accession the Stebbins's symmetric index was estimated. Each karyotype was compared with all the others through Resemblance between chromosomes (REC) and Symmetric indices (Syi) indices which allowed to represent karyological matchings.