The revision of plant material collected during the Iter Mediterraneum XIII of OPTIMA in Albania in 2017 was completed in 2022. The vascular plant material comprises ca. 1750 gatherings, each with 0 to 32 (or in one case 44) duplicates, summing up to a total of ca. 13650 specimens, collected in 112 numbered localities. The number of taxa represented is 957. One of the taxa collected turned out not to have been previously described, which is here treated as a new species named Hypericum ermelindarum. One new combination, at the rank of subspecies, in Aubrieta, is published. The bryophytes material encompasses 61 taxa (14 liverworts and 47 mosses). For 38 of these taxa, the data provided extend their distribution to addictional prefectures across the country. Plagiochila asplenioides, Hylocomiadelphus triquetrus, Hymenoloma crispulum, Rhynchostegium riparioides, and Schistidium apocarpum had not been recorded in Albania for over 50 years.
