Lichens of Algeria

Aim of this work is to describe the diversity of teloschistaceae in the forest of Doui Thabet (Saida province western Algeria). The order Teloschistales contains species of nitrophilous lichens that grow rapidly on nitrogen-rich substrates. There are Teloschistaceae containing anthraquinones Teloschistaceae with sedifolia grey and Physciaceae rich in atranorine. After sampling and collecting various specimens between 2019 and 2021 in this forest; the identification revealed 22 species of the Teloschistaceae family reported for the first time from this region. The following five species are noted: Blastenia xerothermica Caloplaca intern Pyrenodesmia microstepposa Usnochroma carphineum and Variospora glomerata are new species for Algeria.