#evergreen

• Agapanthus africanus — The type species of the genus Agapanthus, native exclusively to the Cape region of South Africa, characterized by evergreen, narrow leaves and compact spherical inflorescences with deep blue, sometimes dark purple flowers. Structurally, this plant differs from other horticultural hybrids by its slower growth rate and higher sensitivity to low temperatures, being cultivated worldwide as an ornamental collector's species.
• Agapanthus orientalis — A species of perennial plants in the genus Agapanthus, native to the eastern provinces of South Africa, often classified as a subspecies of Agapanthus praecox. This structurally robust plant is characterized by broad, evergreen, elegantly arching leaves and massive globose inflorescences capable of supporting up to one hundred blue or white tubular flowers, forming the genetic basis for most modern large horticultural cultivars.
• Agathis — A genus of large, evergreen coniferous trees in the family Araucariaceae, distributed across the Southern Hemisphere, particularly in the tropical and subtropical regions of Southeast Asia and Oceania. These trees are characterized by massive, cylindrical trunks, smooth bark, and unusually broad leaves for conifers, holding major ecological importance and being highly valued for their production of natural resins and durable timber.
• Aglaonema — A genus of flowering plants in the arum family, Araceae, native to tropical and subtropical regions of Southeast Asia and New Guinea. These plants are highly valued worldwide as indoor ornamental plants due to their high tolerance for low light conditions and decorative foliage, which is often variegated, patterned, or tinged in complex shades of green, silver, cream, or red.
• Aglaonema commutatum — A prominent species of evergreen perennial plant in the genus Aglaonema, native to the Philippines and Sulawesi. It is one of the most popular species cultivated as a houseplant, characterized by large, oblong-lanceolate leaves of a dark green hue elegantly splashed with silvery-grey bands along the primary lateral veins, periodically producing spadix-type inflorescences followed by decorative red berries.
• Aglaonema costatum — A species of evergreen perennial plant in the genus Aglaonema, native to the tropical regions of Peninsular Malaysia, Singapore, Thailand, and Vietnam. It is highly popular as a houseplant due to its distinctive appearance, featuring broad, ovate, glossy dark green leaves structurally highlighted by a prominent white midrib and scattered with irregular white spots resembling snowflakes.
• Aglaonema oblongifolium — A robust species of tropical plant in the genus Aglaonema, native to the humid regions of Malaysia, Indonesia, and the Philippines. It is structurally distinguished by its taller stature and its large, elongated, oblong-elliptic or lanceolate leaves of a deep, uniform dark green, extensively used in breeding programs to create resilient indoor cultivars.
• Aglaonema roebelenii — A species of evergreen perennial plant in the genus Aglaonema, native to the tropical rainforests of Southeast Asia. It is highly recognized in horticulture for its large, elegantly arching leaves of a variegated cream-green or grey-green, featuring a dense structural pattern of silvery veins that cover almost the entire foliar surface, serving as a major genetic ancestor for many modern indoor hybrids.
• Aglaonema treubii — A distinct botanical species in the genus Aglaonema, native to the humid regions of Indonesia. It is structurally characterized by narrow, lanceolate, and sharp leaves of an intense green, decorated with a compact central mosaic of silvery-green hues that do not reach the outer margins, resulting in a compact habit and extremely slow growth.
• Agonis — A genus of flowering evergreen shrubs and trees in the family Myrtaceae, strictly endemic to the coastal areas of southwestern Western Australia; characterized by aromatic leaves rich in essential oils, small five-petaled white flowers arranged in axillary heads, and woody capsules.
• Agonis flexuosa — A species of fast-growing, evergreen tree or large shrub in the family Myrtaceae, commonly known as the peppermint tree or willow myrtle; native to southwest Western Australia, it is celebrated for its weeping branches, lance-shaped leaves with a distinct peppermint aroma, and small white flowers.
• Evergreen — A specialized term used to describe plants, trees, or shrubs that possess the structural biological property of keeping their green leaves persistently throughout the entire year. This vegetative phenomenon defines species perfectly adapted to variable climatic environments, which do not undergo a complete defoliation phase during cold or dry seasons, maintaining active photosynthesis and providing constant ecological support to the ecosystem.
• 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.
• Tall kangaroo paw — The most robust and adaptable species of the Anigozanthos genus, native to the damp and forested regions of Southwestern Australia. This structural perennial plant is distinguished by imposing flower stalks that can reach two meters in height, evergreen sword-like leaves, and velvety yellow-green inflorescences, being heavily used in hybridization due to its high resistance to fungal diseases and temperature fluctuations.
• Araucaria — Common name assigned to any exotic coniferous tree from the homonymous botanical genus, native to the Southern Hemisphere, characterized by persistent, rigid, scale-like or needle-like leaves and branches arranged in regular, symmetrical tiers. Many species are cultivated globally for ornamental purposes due to their distinct geometric appearance.
• Araucariaceous — Common name used to denote a member of the conifer family Araucariaceae or to describe elements characteristic of these relict Southern Hemisphere trees. As an adjective, the term qualifies the anatomical structures, leaves, or massive woody cones specific to this ancient plant lineage.
• Arbutus — A genus of perennial, evergreen small trees and shrubs in the family Ericaceae, native to the Mediterranean regions, Western Europe, and North America. Species within this genus are recognized for their decorative bark that peels away in flakes, white or pink bell-shaped flowers, and spherical, granulated, reddish fruits structurally resembling strawberries, hence their popular name 'strawberry trees'.
• Arctostaphylos — A genus of higher plants in the Ericaceae family, comprising approximately 60 species of evergreen, low-growing or trailing shrubs, predominantly distributed in the mountainous and coastal regions of western North America. The main structural characteristic of these plants is their smooth, glossy, deep reddish-brown bark, leathery leaves, and globose fruits resembling small red or brown berries, commonly known as manzanitas or bearberries.
• Ardisia — A genus of higher plants in the Primulaceae family (subfamily Myrsinoideae), comprising over 500 species of evergreen shrubs, small trees, and herbaceous plants, predominantly distributed throughout the tropical and subtropical regions of the Americas, Asia, and Australia. Their main structural characteristic is represented by alternate, often leathery leaves with entire or wavy margins, small star-shaped flowers grouped in umbel-like inflorescences, and globose drupe-type fruits, intensely colored in red or black, highly valued ornamentally.
• Asarum virginicum — A species of evergreen perennial herbaceous plant native to the southeastern United States, historically known in taxonomy under this academic name and currently classified as Hexastylis virginica. Characterized structurally by its persistent, heart-shaped leaves with a striking mottled pattern and unique flowers hidden close to the ground, it is appreciated in niche horticulture for its shade tolerance and decorative groundcover qualities.