Bunga Raya Subdistrict Siak Regency is an area consisting of lowlands, undulating and slightly hilly. This region is one of the fern distribution area. The purpose of this study was to determine the diversity of ferns and to inventory fern species found in Bunga Raya District, Siak Regency based on their morphological characters. Sample collectionhad been carried out using the exploration meth…