A introduction to the flora of Kahman Aleshtar aera(Lurestan province)

Kahman reserve covers an area of 400 km2 situated in the northeast of Aleshtar. The reserved area presents a variety of habitats, including cliffs and rocky outcrops, piedmont plains, alluvial plains, valleys and aquatic habitats. Minimum and maximum elevations of study area are 1600 and 3600 m, respectively. Mean annual precipitation of the area is 554 mm and mean annual temperature is 15.2 ˚C. In this study, 228 species are collected and identified. These species belong to 47 families and 154 genera. Asteraceae with 34 species, Lamiaceae with 25 species, Fabaceae and Poaceae each with 21 species are main families of this area. Life forms using Raunkier method indicates that the therophytes with 45.1 % (101 species) and hemicryptophytes with 33.9 (76 species) are the most frequent life forms. Investigation on geographical distribution of species showed 49.1 % of species (110 species) belong to Irano – Turanian region. Of these, 25 species are endemics of Iran.