Abstract:With 29 species in Iran, Polygonum L. is comprised of annual and perennial plants in different habitats. P. aviculare makes a species complex, hardly distinguished from P. arenastrum and P. patulum. In the present study, pollen grains, fruit surface and petals and leaves epidermis features were used to provide diagnostic features in order to separate species from one another. In Total, 33 populations of 6 annual species, including P. aviculare, P. arenastrum, P. patulum, P. argyrocoleon, P. polycnemoides and P… Show more
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