Abstract
Studies of Tunisian Bryoflora are largely quite outdated and disparate. To resolve this, a study of Anthocerophyta and Marchantiophyta of Kroumiria began in May 2018 observing two hornworts and 30 liverworts. The list of the hepatological flora of the Kroumiria based on the literature and new collections, was updated with 80 reliably recorded species. This updated list shows that 28 species may be threatened. Numerical analyses were used to specify the requirements of the 32 listed species for substrate, light, temperature and humidity and to distinguish 7 different ecological groups ranging from the hydro-thermo-photophile to the mesohygro-sciaphile.