TWO NEW RECORDS OF THE GENERA NAJAS (NAJADACEAE) AND LEMNA (LEMNACEAE) FOR AQUATIC FLORA OF IRAN

به منظور تدوين فلور گياهان آبزي ايران تيره هاي Najadaceae و Lemnaceae مطالعه گرديد. در بين نمونه‌ها گونه‌هاي Najas gracillima از استان خوزستان و Lemna perpusilla از استان فارس براي اولين بار جمع‌آوري و شناسايي شد. در اين مقاله گونه‌هاي مذكور از ايران معرفي و كليد شناسايي جنس‌هاي Najas و Lemna براي گونه‌هاي شناخته شده از ايران ارايه مي‌شود.

For the preparation of aquatic Flora of Iran treatment, the families Najadaceae and Lemnaceae were studied. Among them, the specimens of Najas gracillima were collected from Khuzestan province wetland and the specimens of Lemna perpusilla were collected from Fars province wetland for the first time for the aquatic flora of Iran. In this paper, the two species are reported from Iran. Key to the species of both genera is presented for the species occurring in Iran.