Between 65 and 300 species are recognised, depending on the circumscription of the genus; some botanists divide the genus into several smaller genera, including "Fagopyrum", "Fallopia" and "Persicaria".
Between 65 and 300 species are recognised, depending on the circumscription of the genus; some botanists divide the genus into several smaller genera "Fallopia" and "Persicaria". Several smaller genera are including "Fagopyrum".