Zizania latifolia – a new alien plant in Lithuania [Zizania latifolia – naujas svetimžemis augalas Lietuvoje]. – Botanica Lithuanica, 15(1): 17–24

A new species in Lithuania Zizania latifolia (Griseb.) Turcz. ex Stapf was spotted in the Dotnuvėlė stream near Akademija pond in Akademija town (N 55o24’, E 23o50’) Kėdainiai district in 2006. A detailed investigation of Z. latifolia in Akademija pond showed that it was most spread in the communities of class Phragmito-Magnocaricetea Klika in Klika et Novák 1941. Zizania latifolia formed monodominant community Zizanietum Akht. 1987. In the pond and near it 21 patches were recorded. The total area covered by these plants was over 2500 m2. Observations showed that Z. latifolia successfully out-competed Phragmites australis and other less abundant species of pond in its most thriving patches. It can be presumed that Zizania latifolia has potential for further spread in Akademija pond and further.

Keywords: Zizania latifolia, Poaceae, Lithuania, alien species, mesotrophic water body.