Floristic composition and plant diversity of Rawdhat Al Masodi, Saudi Arabia

Although there is quite high number of studies aiming to survey the floristic diversity in Saudi Arabia, there is still lacking of complete compilation of the floristic diversity in this region. The present study is considered as another effort to investigate the floristic diversity, life forms and phytogeographical distribution of plant species in Rawdhat Al Masodi which is located about 120km from capital Riyadh. A total of 51 species belonging to 49 genera and 25 families were reported in this study. Astraceae and Poaceae had the highest number of species (11 and 5 species, respectively). The dominant life forms were life form spectrum of the recorded species showed the prevalence of theorphytes (41%) followed by chamaephytes (37%). Chorology indicated prevalence of the monoregion species in which most of species identified as Saharo-Arabian (SA), Irano-Turanian (IT) and Sudanean (SU). In conclusion, the Rawdhat Al Masodi harbouring high diversity of vascular plant species. Unfortunately, this area is currently under the stress of wood-cutting, urbanization and unorganized grazing. Therefore, it is recommended to start a conservational programs and restoration of the natural habitats in this area.