Ali Reza Naqinezhd - Department of Biology, Faculty of Science, Central Herbarium of Tehran University
Ahmad Ghahreman - Department of Biology, Faculty of Science, Central Herbarium of Tehran University
Mostafa Assadi - Department of Botany, Research Institute of Forests and Rangelands

Cardamine flexuosa With. (Cruciferae) and Carex orbicularis Boott subsp. orbicularis (Cyperaceae) are reported for the first time from Iran in Hyrcanian and Irano-Turanian phytochoria respectively. Taxonomical problems, ecology and phytogeography of each species are discussed. Also a clearer picture of distribution and ecology of Cardamine tenera Gmel. in North of Iran is presented.

Cardamine flexuosa, Carex orbicularis, new records, Cardamine tenera, taxonomical problem, Iran