Resumen de Vegetative and reproductive morphology of five Spirogyra species (Zygnematales, Charophyta) 
in Argentina


Nora C. Ferrer, Eduardo J. Cáceres

• Abstract: In this study five species of Spirogyra (Zygnemataceae) from lentic (pools, lagoons, lakes) and lotic (stream) habitats in the south of Buenos Aires province, Argentina, are described and illustrated in detail, with precision about their vegetative morphology, conjugation and zygospore ornamentation. Two of the species, S. ellipsospora and S. hyalina, are newly recorded for Argentina and the other three, i.e. S. quadrilaminata, S. maxima and S. majuscula, were previously mentioned with imprecise references and no illustrations for this country.