Only one species, alpine azalea, belongs to the Loiseleuria genus. The Latin name of this genus is given according to the French botanist J. L. A. Loiseleur-Deslongchamps. This is an Arctic-alpine species found in cold parts of North America, northern Asia and Europe and it got to the southern parts of Europe (Pyrenees, Alps, Carpathians, the north part of the Balkan Peninsula) in the Ice Age. It was able to find proper conditions and to survive until now. This plant is found only in three locations in Slovakia nowadays. Two of these locations are in the Low Tatras National Park and...