The flora of the archipelago originates from the extinct forests of the Tertiary and previous periods. As part of the Macaronesia region, the Azores, along with Madeira, the Canaries, Cape Verde, and the coastal strip of Northwest Africa, constitute a fortunate cluster of islands.
The flora of Macaronesia was a relic of the Laurissilva forests, characterized by a wide variety of species and endemics. These forests vanished during the glaciations of the Tertiary period.