The latest checklist of Iranian Pyrus L. (Rosaceae) taxa

In this paper, the latest checklist of Iranian taxa of the genus Pyrus L. is presented. Pear as a tree to shrubby member of subtribe Pyrinae, subfamily Spiraeoideae family Rosaceae, comprises of about ۲۲-۷۵ species in the northern hemisphere and some parts of northwestern tip of Africa, except for North America. According to the latest information from the flora of Iran, ۲۵ taxa (including two hybrids) of the genus occur in Iran. Geographically, pears in Iran are distributed especially in transition zones between Irano-Turanian and Hyrcanian provinces in Elburz mts. from northeast to northwest, scrublands and dry slopes of northeast, dense forests and open forests of northwest (Arasbaran area) and within the Quercus woodlands of Zagros mts. throughout northwest to southwest. The main morphological diagnostic characters in Pyrus consist of shape of leaf, fruit, indumentum and leaf margin shape, presence of calyx and lenticels on the mature fruit. These taxa are classified as the members of four sections, viz. Pyrus (P. grossheimii, P. hyrcana, P. communis, P. farsistanica, P. turcomanica, P. tamamschianae, P. mazanderanica), Pashia (P. boissieriana,P. pashia, P. kandevanica, P. gharemanii, P. longipedicellata, P. cordifolia), Argyromalon (P. salicifolia var. salicifolia, P. salicifolia var. serrulata, P. elaeagnifolia, P. theodorovii var. latifolia) and Xeropyrenia (P. syriaca, P. oxyprion, P. glabra, P. spinosa, P. zangezura, P. giffanica). The hybrid taxa include P. × takhtadzhianii and P. × medvedevii.

کلیدواژه ها:

Flora ، Phenology ، Phythogeography ، Systematics