Morphological characteristics of Vaccinium xintermedium Ruthe

Vaccinium ×intermedium Ruthe, the hybrid of V. myrtillus and V. vitis-idaea, by contrast with the parental species is very rare plant and has a discontinuous geographical range in north-western Europe. This paper describes the morphology of V. ×intermedium from Polish populations occurring in part of Pomeranian Lakeland in comparison with both parent species. The results presented here confirm the suggestions of earlier research that V. ×intermedium displays intermediate characteristics of leaf and floral morphology concordant with hybrid status. Also, is discussed the problem of the isolating mechanisms between parent species and hybrid's ecology.