The feasibility of grouping anther‐derived plants ofSolarium phurejaaccording to ploidy based on their morphological characteristics was studied. Canonical discriminant analysis identified four characteristics (anther length, number of chloroplasts per pair of guard cells, leaf width, corolla width at widest diam) of nine measured as the most effective combination for diagnosing ploidy. Data for these characteristics from two sets of plants were subjected to two clustering techniques, one using the average linkage clustering (UPGMA of the NT‐SYS programs) and the other using centroid sorting (SAS‐Fastclus). Screening of anther‐derived plants by cluster analysis proved to be an efficient means of separating monoploids from the other ploidy levels.