The bryophyte flora of Akyazı, Arifiye, Geyve, Karapürçek districts (Sakarya, Turkey)

In this study, bryophyte flora of the Akyazı, Arifiye, Geyve, Karapürçek districts in Sakarya Province of Turkey was found out. A total of 1037 bryophyte specimens were collected from the research area in the different vegetation periods between 2016 and 2017. As a results of this study; 193 taxa (1 hornwort, 34 liverworts, 158 mosses) belonging to 113 genera and 55 families were determined. Among them, Sphagnum contortum Schultz is recorded for the second time from Turkey and also 11 taxa are new for the A2 grid-square according to the Turkish grid square system adopted by Henderson (1961). In addition, in the floristic list all taxa, with their Turkey distributions, which are determined by reviewing the related all literatures, and IUCN categories in European countries, moreover life forms of bryophytes and some ecological features such as; (humidity, light, acidity) are given.