Chemotaxonomically significant roburic acid from Section Cruciata of Gentiana

► Roburic acid was isolated from the roots of Gentiana macrophylla. ► All the presented 8 species of Section Cruciata were checked to have roburic acid whereas other Sections or genera not by HPTLC method. ► Roburic acid could be served as chemtaxonomic marker for Gentiana species in Section Cruciata.