Notes on the genus Allium subgen. Allium sect. Longivaginata in Iran

Allium L. (Amaryllidaceae) comprises bulbous plants and is one of the largest monocots genera in the world. Members of the Allium subgen. Allium sect. Longivaginata were studied and updated in Iran. So far, five species from this section have been reported from Iran. During the study, an interesting specimen of this section was identified as Allium arlgirdense Blakelock from west Azerbaijan (at the border of Iran, Turkey, and Iraq). It is reported as a new record for the flora of Iran. Furthermore, Allium petri and A. jaegeri are recognized as synonyms of A. longivaginatum, and A. dolichovaginatum as a synonymy of A. autumniflorum. Description, distribution map of species, and an identification key for the section are presented.