Hyacinthella leucophaea var. rumelica and Muscari azureum, two non-native species planted in the Český kras area, Central Bohemia

The occurrence of two Hyacinthaceae taxa naturalised in the Český kras area (Bohemian Karst), central Bohemia is reported. Both taxa were deliberately planted into natural habitats of the Velká hora and Paní hora hills in the second half of the 19th century probably by J. Velenovský or his colleagues. Their taxonomic identity has long been unclear but they had been considered to be one or two species of the genus Hyacinthella. We argue that the population on Paní hora hill actually belongs to Muscari azureum, the occurrence of which is reported here for the first time for the Czech Republic. The population on Velká hora hill belongs to Hyacinthella leucophaea var. rumelica. Morphological descriptions of both taxa based on the naturalised plants and literature are provided and the history of their recognition as well as their ecology, distribution and taxonomy are discussed.