T he present study described fifteen (15) cultivars of yams of the varietal group "Pémonon" cultivated in Burkina Faso. Twenty-seven (27) qualitative characters, ten (10) from the stems, nine (9) from the leaves, five (5) from the tubers and three (3) from the f lowers were used to characterize the collection. The experimental design was Randomized Complete Block Design replicated three times. The experiment was carried out during 2019-2020 and 2020-2021 seasons at the village of Onliassan, in the province of Sissili. The study showed a large phenotypical diversity. These collected qualitative data allowed to classify these cultivars into the complex of Dioscorea cayeninsis-rotundata
species and to identify new nine (9) cultivars.

Cultivars Dioscorea cayeninsis rotundata morphotypes yams Burkina Faso