A revision of the genera Phragmites and Schismus (Poaceae) in Iran

The genera Phragmites and Schismus were morphologically studied for the ongoing project of the Flora of Iran. Phragmites karka (Arundineae) is reported as a rare species from NE (Khorassan province) and SE (Kerman province) Iran again. An identification key to the species of the genus and a complete description of Ph. karka is given. Studies on the genus Schismus showed that the formerly record of Schismus barbatus from Iran may not be correct and all collected specimens of Schismus species from Iran belong to Schismus arabicus. This result is based on the examination of diagnostic characters of both species and comparing Iranian materials with the specimens of Schismus barbatus from N. Africa.