چكيده لاتين :
The genus Nasturtium with two species. N. officinale and N.microphvllum, distributes in the wet and damp places of Iran. These two species make a hybrid state. Nasturtium x sterile, with intermediate morphological and chromosomal features. This hybrid state is reported for the first time in Iran.Ecology and general distribution of the hybrid and its parent taxa are discussed. Moreover N.microphvllum is reported from more localities comparing to the one loccality in Flora Iranica.
