Prospections carried out on hard lower Cretaceous limestones, near the ridge of the Petit Luberon (Vaucluse) and in several small valleys situated on the southern slope and at the western extremity of the massif, enabled the author to add 6 liverworts and 14 mosses to the bryoflora of the mountain, which at present consists of 21 species of liverworts and 118 species of mosses. Among the most interesting contributions (taxa that are rare in south-eastern France) Bryum ruderale, Cryphaea heteromalla, Orthotrichum acuminatum, Porella × baueri and Seligeria acutifolia are worth mentioning.