Hedera crebrescens (Araliaceae) a newly identified diploid taxon and triploid ivies from Hungary

Hedera crebrescens, a newly identified species in Hungary is described here. This diploid ivy is not identical with the diploid H. helix. It grows vigorously, is invasive, and has spread into most parts of the country and adjacent regions. We also present two triploid species of hybrid origin, which were known formerly as selected varieties of H. helix. Triploids differ from the presumed diploid and tetraploid parents based on their reproductive morphological traits and also based on their ecological demands