This line aims to set up critical catalogues of local to regional floras, to produce taxonomical revisions, and to analyse the plant diversity at various scales. It also includes applied works related to plant conservation.
Some of the main results of these activities produced during the last years are the regional floras "Flora dels Països Catalans" and "Flora manual dels Països Catalans", and a number of local catalogues (Cadí mountains, Ebro delta, etc.). We have also collaborated in corporative projects (such as Flora iberica and ORCA), and we have elaborated various studies on threatened plants.