ivy

ivy, (genus Hedera), genus of about 15 species of evergreen woody vines (rarely shrubs) in the ginseng family (Araliaceae), native to Europe and much of Asia. Several species are cultivated as climbing ornamentals, and the name ivy especially denotes the commonly grown English ivy (Hedera helix), which is frequently planted to clothe brick walls. Most ivy species creep or climb by aerial roots with adhering disks that develop on the stems. The stems bear simple...