It has been established that 22 species of the genus Polygonum L. s. str. grow in Donbass. It is recommended to include P. maritimum L., P. mesembricum Chrtek, P. euxinum Chrtek in the regional Red Book. Rare species are P. patuliforme Worosch., P. capsicum Kom., P. aschersonianum H. Gross, P. pulchellum Loisel. Alien species include: P. rigidum B. Skvortsov, P. rurivagum Jord. ex Boreau, P. sabulosum Worosch., P. bellardii All., P. argyrocoleon Steud. ex G. Kuntze. They do not pose an invasive threat.

Ostapko V.M.