[Cal-IPC] Ecological impact: Hedera canariensis (Algerian ivy) is a perennial woody vine (family Araliaceae). It is found throughout California along the coast, and is less widespread than its close relative English ivy. Algerian ivy grows vigorously in forests where nothing else seems able to compete and inhibits regeneration of understory plants, including forest wildflowers and new trees and shrubs. (link added by Mary Ann Machi)

[Wikipedia] Canary Islands native: Hedera canariensis, the Canary Island ivy, Canary ivy or Madeira ivy,[2] is a species of ivy, native to the Canary Islands and possibly the Atlantic coast of northern Africa. (link added by Mary Ann Machi)