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Assessing distribution patterns of valuable taxa plays an important role in the biodiversity conservation of these taxa. The genus  Crocus  L. (Iridaceae) comprises about 100 species that are distributed mainly in the Mediterranean region and western Asia. The present study purposed to assess the distribution patterns of Iranian  Crocus  species (including  C. sativus  L. and 8 wild species) and their conservation status in Iran as one of diversity centers of  Crocus  in the Middle East. A set of geographic distribution data was compiled through field studies, and reviews of herbarium specimens, iNaturalist, and various Flora. Localities were marked on geo-referenced maps (1/106) of Iran using ArcView version 3.2 (Esri, 2000). The distribution patterns of the taxa were mapped per 0.25° × 0.25° universal transverse Mercator grid cells (25 km 2  with the exception of boundary area). Based on the species distribution (SDI) (33%) and species specialization (SSI) (44%) indices, those Iranian  Crocus  species that are threatened are mainly distributed in Irano-Turanian region. The mountainous ecosystems of Almeh and Western Alborz are important distribution centers of these taxa. Iranian  Crocus  species with SSI &lt; 0.5 ( C. almehensis ,  C. gilanicus ,  C. michelsonii , and  C. caspius ) have the highest conservation value.

Distribution patterns and conservation status of Crocus species in Iran, one of the diversity centers of Crocus in the Middle East