Plant Diversity, Life Form and Phytochoria of Hamedan Alvand Region in Iran

Abstract

This study was carried out for determination and discrimination vegetation by Eco-phytosociology method. Flora of this area was determined by using available references. Based on collection we encountered about 290 specimens that belong to 167 genera and 41 families. The largest families in the area are Asteraceae (47 genera), Poaceae (34 genera), Lamiaceae (30 genera), Caryophylaceae (18 genera) Papilonaceae (17 genera). The floristic composition of the area is strongly influenced by large number of Irano-Turanian elements. The life form spectrum was characterized according to Raunkiers system. The life form spectrum observed was: Hemichryptophyte (61.62%), Chamophyte (15.14%), Therophyte (14.79%), Phanerophyte (4.58%) and Geophyte (3.87%).