چهار گونه جديد از جنس Cousinia Asteraceae در ايران

FOUR NEW SPECIES OF THE GENUS COUSINIA CASSo (ASTERACEAE) FROM IRAN

Four new species of the genus Cousinia arc described from Iran. C. barezicu is based on a specimen collected from Barcz mountain chains. The species belongs to the section Spinuliferae and related to C. Ionglfolia and C sicigero. It however, differs from both by having discolored leaves. C. isfahanica another new species from the section Rigidissimae is related C. rigidissirna and C. auranti both from Afghanistan. This species has been based on a specimen collected from Isfahan. Sernirorn. C. maassoumii is described from adjacent localities of Delijan and Arak cities. It is from the section Pugioniferae and most closely related to C. macroptera but having different leaf and indumentum characters. C. pseudocandolleona is described based on specimen from Khorasan province. It is closely related to C. vandotleana an endemic of Harnadan province, but diners from it by having stem and stem leaf characters.