Sisyrinchium micranthum (Iridaceae), a new alien species for the flora of Russia and Abkhazia

For the first time, Sisyrinchium micranthum is reported for the flora of Russia (Adler District of Sochi, Krasnodar Region) and Abkhazia (Gagra, Gudauta and Ochamchira Districts). Habitats are represented by grassed, both wet and dry meadows, pastoral clearings, roadsides with dense soil and low-grass coastal vegetation in the altitude range from 1 to 232 m above sea level. Found in several localities on the territory of the Tuapse-Adler and Abkhaz floristic regions, S. micranthum is stated as a naturalized alien plant and, together with S. septentrionale previously discovered in the Adjara floristic region, is the second species of the genus Sisyrinchium in flora of Caucasus.