MOVECLIM, Mid Course Meeting, 2-6 September 2013, Réunion (Mascarenes).The evergreen forests of the Azores offer a great variety of habitats for bryophytes, owing to the diversity of microhabitats and available substrata, and to the hyper-humid conditions they provide. Bryophytes play a vital role in such ecosystems (Homem & Gabriel, 2009). The understanding of species rarity is important in ecological and conservational research