Additional identifications: Persicaria hydropiper (L.) Delarbre⁣ det. Petrov Z. V. at 25.07.1913; Polygonum hydropiper L.⁣ det. Petrov Z. V. at 25.07.1913 Collectors: Petrov Z. V. Collection date: 25.07.1913. Administrative regions: LV - Ludzas novads. Groups of specimens: Образцы сектора Восточной Европы; Соглашение Минобрнауки №075-15-2021-1056; Herbier du Bureau de Botanique appliquée, Petrograd.Original label text: Habitat / plant community in location of collecting: канава у дорогиRecord creation: 2024-05-22, Ilya Sadovnikov, PhotoScan D2.Citation: Specimen LE 01235546 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01235546