The study aimed to determine the leaf venation morphological character of ten species of Solanaceae, and to know relationships based on the morphological character of the leaf venation. This descriptive study describes the morphological character of the ten types of leaf venation Solanaceae namely Brugmansia suaveolens Bercht. & J.Presl, Brunfelsia uniflora D.Don, Capsicum frutescens L., Datura…