Bromopsis pumpelliana subsp. flexuosa - nová rostlina květeny České republiky

Bromopsis pumpelliana (Scribn.) Holub subsp. flexuosa (Drobov) Probatova was found as an adventitious species growing on a wet mountain meadow in the Krkonoše Mountains, at an altitude of about 970 m. The species forms a dense stand there and it appears that it has occurred at the locality for a long time, because there have been no agriculturalactivities since the end of the 2nd World War. The origin of B. pumpellianaat this locality is unknown, subsp. flexuosa being native in Eastern Siberia and the Far East of Russia. Chromosome number 2n=56 found in plants from the adventitious locality is in agreement with Siberian plants. A detailed synonymy and description is given as it is probably the first time the species is reported from Central Europe.