Abstract: The monitoring morphological changes of fronds of G. multipartita during the study period, shows that the maximum growth was reached in June 2012. This summer form is characterized by large fronds with regular and abundant branches. After growth arrest during the summer, a new phase of growth more or less pronounced depending on the year is observed in autumn. Fronds then degenerate to make room for new growth in January on pérennant disk. The study indicates that it would be possible to exploit the species in June, before the fronds begin to degenerate.