Triquetrella arapilensis y Especies Afines: Su Morfología y Distribución Geográfica

A critical comparative study based on the gametophytic characters and acid-base color reactions of T. arapilensis was made. This is the only European species of the genus, although several species with disjunct areas of distribution-T. californica, T. filicaulis, T. papillata, T. patagonica, and T. tristica-appear to be very closely related. We show that there are important differences to keep T. arapilensis as an independent species. The current distribution of T. arapilensis is mapped.