DOI: 10.36347/sajb.2021.v09i10.007

Pages: 293-302

Riccia constitutes a group of species suffering from a liverworts complaint in thalles very diversified and with which a big part of these species are still described in the especially African tropical zones more particulary in Ethiopia and in Madagascar. The identification of certain species of bryophytes according to their morphological characteristics remains even today problematic notably because of a strong phenotypic plasticity or of phenomena of anvergence. The objective is to characterize and to study the genetic diversity of several species of bryophytes of these genera Riccia, on all sides the sides the channel of Mozambique, by an approach of integrative taxonomy. In a first phase, we developed with the morphological data of the primary hypotheses of delimitation of species and the second part, we tested theses hypotheses by molecular analyses based on the adapted genes. The results obtained show, on a set 13 morphological hypotheses, 10 groups were confirmed by the analysis of ABGD. We shall discuss the congruence of these results of molecular delimitation with our morphological hypotheses.