Article

The total number ofbryophyte taxa for each UTM square (10 km) in Portugal is given and the generai phytogeographical variation ofthe bryoflora is outlined, Some cumulative maps are discussed and finally a phytogeographycal synthesis is presented. Maps of species distribution have always been a valuable tool for the evaluation of bioclimatic zones and for the Mediterranean area, some bryophytes taxa, as Riccia and Sphagnum, are good examples. The limit of Mediterranean influenee in Portugal given by this bryofloristic analysis is compared with the phytogeographical division proposed by different authors for Portugal. The conclusions lead to the identification oftwo different situations in Portugal relative to endemie groups, that are related with the possible center of origin,