Fatemeh Heidaryan - PhD Student/Department of Biology, Sciences and Researches branch , Islamic Azad University, Tehran, Iran
Taher Nejadsattari - Assistant ProfessorDepartment of Biology, Sciences and Researches branch , Islamic Azad University, Tehran, Iran
Seyyed Mohommd Mehdi Hamdi - Assistant Professor/Department of Biology, Garmsar branch , Islamic Azad University, Garmsar, Iran
Mostafa Assadi - Professor/Research Institute of Forests and Rangelands. P. O. Box ۱۳۱۸۵-۱۱۶, Tehran, Iran

Ornithogalum khuzestanicum (Hyacinthaceae) is described and illustrated as a new species from the subalpine areas in Khuzestan province, Iran. The new species is similar to O. brachystachys C. Koch and O. arcuatum Stev. in leaf shape, bulb shape and  inflorescence shape, but differs by its stem length, margin of leaf, inflorescence length, bracts length, pedicels and ornamentation form on testa cell of seed and also pollen characters are different. The new species is currently known only from eastern Khuzestan, near the border of western Charmahale-Bakhtiari and Kohgiluye va -Boierahmad.

Ornithogalum, Iran, Hyacinthaceae, new species