Two new hybrids of Epilobium ciliatum (Onagraceae)

Hybrids of Epilobium ciliatum Rafin. with E. alpestre (Jacq.) Krocker (E. ×prochazkae) and with E. alsinifolium Vill. (E. ×josefi-holubii) are described from the Krkonoše Mts. It is highly probable that E. ciliatum hybrids will be more common in alpine areas in future, because this species has become a regular component of the ruderal flora even in area above the timberline. Hybrids between E. anagallidifolium Lam. and E. palustre L. (E. ×dasycarpum Fries) and E. alpestre and E. collinum C. C. Gmelin (E. ×hectori-léveilleanum Thell.) are reported for the first time from this area of the Czech Republic.