Résumé
Longevity of individuals is an important parameter of demography, life-history strategy, and evolutionary dynamics.In clonal plants, the genetic individual (genet) develops through the birth and death of potentially independent units (ramets) and can attain extreme longevity. However, estimating its age is challenging due to the loss of older ramets.Integration and careful application of morphological and newly emerging genomic tools based on a somatic genetic clock approach opens a new perspective for obtaining reasonable approximation of the age of a genet.Morphological and molecular techniques enable us to assess plant longevity, a key demographic parameter essential for understanding life-history strategies and species persistence within communities.