The Hornwort and Liverwort Atlas of Romania

Evaluating the distribution dataFollowing over 15 years of field studies and the examination of a large amount of scientificpublications, valuable chorological data were obtained that were used in the building of 214 distributionmaps. For Lophozia silvicola it was not made the distribution map because I did not found any locality,only was mention from Romania.Based on the literature findings, 12 species were excluded from the list of liverworts of Romania,identifying the sources from which data were mistakenly taken over or were erroneously published.After determining the collected materials, over 10 000 determinations, 164 species were identified,over 3 000 samples being introduced in the Herbarium of the Institute of Biology from Bucharest -BUCA.On the administrative map (fig. 221) the distribution of the grid cells from where the hornwort andliverwort species were collected is presented. It can be observed that the most studied areas are theCarpathian Mountains, the southern regions of the country being only slightly investigated. Nochorological data were found for Olt and Dolj counties, although at least three species could be identifiedin these regions (Frullania dilatata, Porella platyphylla and Radula complanata).Fig. 221. Distribution of zones with hornworts and liverworts distribution data in Romania.Based on chorological data for hornworts and liverworts, within the Hornworts and LiverwortsAtlas of Romania, it was possible to design a hornworts and liverworts biodiversity map, by overlappingdistribution data of the 214 mapped species (4 hornworts and 210 liverworts) grouped into 10 frequencycategories (figs. 222-225).The analysis of these maps shows that the richest areas with hornworts and liverworts in Romaniaare Bucegi Massif, with over 90 species / area unit (6' latitude × 10' longitude), Rarău Mountain, CiucaşMountains and Retezat Mountains, with over 70 species / area unit, Giumalău Mountain, Piatra CraiuluiMountains, Făgăraş Mountains, Cindrel Mountains and Apuseni Mountains, with over 60 species / areaunit, Rodna Mountains, Ţibleş Mountains, Harghita Mountains and Parâng Mountains, with over 50species / area unit.396