EPILOBIUM PSEUDORUBESCENS A.K. SKVORTSOV (ONAGRACEAE), A NEW INVASIVE ALIEN FOR THE POLISH FLORA A.П. <...> EPILOBIUM PSEUDORUBESCENS A.K. SKVORTSOV (ONAGRACEAE), НОВЫЙ ЗАНОСНЫЙ ВИД ДЛЯ ФЛОРЫ ПОЛЬшИ (Lomonosov Moscow State University; e-mail: allium@hotbox.ru) During my visit to the University of Warmia and Mazury in olsztyn I have discovered in oLtC (oLs) herbarium three specimens of Epilobium pseudorubescens A.K. skvortsov, an invasive alien new to Poland: 1) tylkуwko k/Pasymia, przy bazie “Energopolu”, na osuszonym dnie stawu [ca. 20 km to sE from olsztyn, tylkуwko fischery ponds, drained pond bottom], 16.VII 1999, M. Środa (oLs 15277); 2) Michałki k/Pasymia, kompleks stawуw rybnych “Michałki”, staw po prawej stronie drogi Michałki – Miłuki, bliżej wsi Miłuki, na osuszonym dnie akwenu [ca. 20 km to sE from olsztyn, Michałki fishery ponds, drained pond bottom], 17.VII 2001, M. Środa (oLs 16922) (a plant of E. pseudorubescens and a twig of E. adenocaulon); 3) olsztyn, ok. 500 m na pd. od ul. <...> Białostockiej na osiedlu Mazurskim, oczko wodne ok. 1 ha, brzeg zachodni [City of olsztyn, sE part, bank of the water hole], 23.VII 2006, B. Korycińska (oLs 25642). <...> E. pseudorubescens is a member of E. ciliatum raf. complex. this species was described by skvortsov (1995) from Finland (with paratypes from sweden and russia), but its North American origin is discussed in the protologue. <...> It was formerly known as E. rubescens auct., but this name proved to be misapplied (skvortsov, 1995). <...> E. pseudorubescens is readily recognized from E. adenocaulon by white petals (slightly rose in buds), light green shoots, and lanceolate leaves (oblanceolate in E. adenocaulon). these two species are often found growing together, but no transitions were recorded in the mixed populations. <...> E. pseudorubescens is usually treated as a synonym of E. ciliatum s.l. in the European floras, but at least two separate taxa from this group are known to occur in the Eastern Europe <...>