sentences:  They come into contact with Algerian oak ("Quercus canariensis") and other oak trees and sometimes even form mixed communities with these.Among the woody species also found in these forests are the hawthorn, barberry, butcher's broom ("Ruscus aculeatus"), "Viburnum tinus", ivy, and "Daphne laureola".It forms dense and dark forests in very distinct enclaves, in areas with high rainfall (from 2,000 to 3,000 mm, due to the sudden cooling, with elevation, of humid winds), at altitudes of over 1,000 metres.