Floristic study of Dalab woodlands, north-east of Ilam province, west Iran

Document Type: Regular Paper


1 Guilan

2 Dept. of Forestry, Faculty of Natural Resources, University of Guilan, Someasara

3 Ilam natural Resources Office

4 Dept. of Biology, Faculty of Sciences, University of Guilan


The present survey deals with the floristic study of Dalab Woodlands, located in Manesht and Ghelarang protected
area, western Iran. It covers an area of 4335 ha. In total, 224 vascular plant species belonging to 46 families and
156 genera were identified. The largest families are Asteraceae (29 species), Fabaceae (23 species), Poaceae (22
species), and Apiaceae (18 species).
Astragalus (13 species), Centaurea (9 species), Onosma (6 species),
(5 species) and
(3 species) are the most diverse genera of the region. The life form spectrum includes:
hemichryptophytes (36.6 %), therophytes (33 %), cryptophytes (13.8 %), chamaephytes (8.9 %) and
phanerophytes (7.6 %). From the chorological point of view, the largest proportion of the flora belongs to the
Irano-Turanian (68.7 %) elements. About 22.32 % of the Dalab Woodlands species are endemic to Iran and six
rare species including
Alrawia bellii, Arum giganteum, Cousinia cylindracea, Echinops kotschyi,
Thymbra spicata
Zeugandra iranica
are also identified in this region.