Alien species of American origin on cranberry plantation in Belarus.
In 2010-2012, a complex of naturalized alien species of North American origin was found on cranberry plantations in Belarus (Gantsevichi, Pinsk and Berezovsky districts of Brest Region; Lelchitsy district of Gomel Region). Primary introduction (seeds and vegetative parts of plants) with exported cranberry from Wisconsin (USA) took place thrice in 1982, 1983 and 1985 during the foundation of new plantations in Gantsevichi and Pinsk districts. Further spread on the territory of Belarus and Russia occurred with the planting stock mainly from Gantsevichi experimental base. Among 29 recorded species, 16 ones are new to Belarus, and 13 are new and well-established aliens in the Eastern Europe: Eleocharis obtusa (Willd.) Schult., Carex crawfordii Fernald, Agrostis hyemalis (Walter) Britton, Sterns et Poggenb., Penthorum sedoides L., Triadenum fraseri (Spach) Gleason, Hypericum canadense L., H. ellipticum Hook., H. mutilum L., Truellum sagittatum (L.) Soják, Lysimachia terrestris (L.) Britton, Sterns et Poggenb., Lycopus uniflorus Michx., Eutrochium maculatum (L.) E. E. Lamont, Cicuta bulbifera L. Some species occur on the plantations in high abundance and are characterized by significant invasive potential: Elodea nuttallii (Planch.) H. St. John, Scirpus cyperinus (L.) Kunth, Agrostis hyemalis (Walter) Britton, Sterns et Poggenb., Penthorum sedoides, Triadenum fraseri (Spach) Gleason, Hypericum canadense L., H. mutilum L., Ludwigia palustris (L.) Ell., Truellum sagittatum (L.) Sojak, Bidens frondosus L., Euthamia graminifolia (L.) Nutt, Cicuta bulbifera L.