#persistent foliage

• Evergreen plants — An ecological and taxonomic class of higher plants or broad-leaved trees structurally characterized by the unchanged biological capacity to maintain their foliar apparatus permanently green, alive, and photosynthetically active throughout seasonal cycles. These perennial plant organisms, primarily specific to tropical and subtropical areas but with isolated representatives in temperate climates, do not present a complete phase of autonomous defoliation, instead renewing leaves individually and progressively, providing ecosystems with a continuous source of biomass and oxygen.