In his 1973 article, Skvortsov called "the true brittle willow, S. fragilis" the willow that had come unnoticed to Europe from Asia Minor with human migrations, hybridized with the native white willow,
and inflicted the mess. For the next 35 years botanists remained undecided about the solution of the surfaced problem. Finally,
it was decided that the name "brittle willow" should remain with the hybrid, so that scientists in each European country did
not have to re-write their "floras," while the previously overlooked parent species from Asia Minor was described only in
2009 and received the name "S. euxina." That's why we now have to put down an "x" in front of the Latin name of brittle willow.