The aim of this study was to establish the morphological basis for the classification of major cassava cultivars (Manihot esculenta Crantz) planted in Vietnam. Twenty typical descriptors were observed in various specific growth stages. Four traits related to mature leaves and two traits related to leaf veins were detected in cassava plants after the 4-month stage. | Morphological characterization and classification of cassava (Manihot esculenta Crantz) in Vietnam