Characteristics of weeds of the Buckwheat family (Polygonaceae) in the south of the Primorsky Territory

Information is provided on the species composition of weeds of the Buckwheat family (Polygonaceae) stably growing in the south of the Primorsky Territory and dominating in agrocenoses. The purpose of the study is to analyze plants of the Buckwheat family as a component of weed vegetation in the south of the Primorsky Territory depending on the type of the habitat. Field research was carried out using the traditional route reconnaissance method in 2018–2023 in urban and rural settlements and on the territory of the V.L. Komarov Ussurisky Nature Reserve. During the course of the work, literature data and information from Internet resources were analyzed, and herbarium samples were studied. Phenological observations and photographs of the objects from their habitats were taken. 31 species of the Buckwheat family were discovered, which are the background for the natural or adventive flora of the region under study; 27 species were found on the territory of the Ussurisky Nature Reserve, 12 were included in the list of the weeds in the Primorsky Territory. Many of the plants discovered can be used as feed in animal husbandry and beekeeping, as well as in technological processes and in everyday life for various purposes. Currently, the following species: Acetosa pratensis, Cephalophilon ne palense, Chylocalyx perfoliatus, Fagopyrum tataricum, Fallopia convolvulus, Polygonum aviculare, Persicaria hydropiper, P. bungeana, P. longiseta, P. viscosa, P. viscofera, Rumex crispus are recorded in most administrative-territorial regions of the region and are actively spreading across anthropogenically transformed areas. We propose to add the following species to the list of the weeds in the Primorsky Territory: Acetosa pratensis, Cephalophilon nepalense, Persicaria longiseta, P. viscose.

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