FEATURES OF REPRODUCTION OF RARE PLANT SPECIES OF THE ORCHIDACEAE FAMILY

Three rare plant species (Epipactishelleborine (L.) Crantz.,Listeraovata (L.) R. Br.,Platantherachlorantha (Cust.) Rchb) of the Orchidaceae family have been studied. It has been found that the greatest contribution to reproduction is made by L. ovata (RE = 30.15%), and this indicator for P. chlorantha and E. helleborine does not exceed 15%. The significant differences between potential and actual seed production for Epipactishelleborine that may indicate the non-conformity of growth conditions of this population to its reproduction ecological niche have been revealed.