Kepel (Stelechocarpus burahol) is a distinctive flora of the Special Region of Yogyakarta, which is currently difficult to find. The scarcity of kepel plant has entered the CD (Conversation Dependent) level, which means that conservation should be carried out, otherwise it will become extinct. The purpose of this study was to determine the morphological characteristics and to know the kepel plant kinship in Sleman Regency. The study was conducted by survey method. The selection of sample trees is done by purposive sampling, with the condition that the plants have ever borne fruit or they are bearing fruit. Observations which were carried out included canopy shape, number of branches, stem circumference, stem color, number of nodes, plant height, leaf length, leaf width, leaf stalk length, blade shape, leaf base, leaf tip and leaf color. Data from plant morphology observations are presented in the form of scoring, then an analysis is performed to assess the similarity matrix using the SIMQUAL (Similarity for Qualitative Data) procedure. Grouping of matrix data (cluster analysis) and making dendograms are done by the Unweigthed Pair-Group Method Arithmetic Average (UPGMA) method using numerical Taxonomic and Multivariate System (NTSYS) version 2.02i. The results showed that there was a diversity of Kepel morphology in Sleman, namely the number of branches, stem circumference, crown diameter, number of nodes, leaf blades, leaf base, leaf tips, leaf color and leaf size. In some other morphological characters such as canopy shape and leaf edge shape, there is no morphological diversity. The results of the analysis with the kinship analysis program showed that there were four main clusters with a similarity coefficient of 0.55. and there are 11 pairs of related plants with a similarity coefficient of 0.91.