#trees

• Abietaceae — An archaic botanical or systematic classification previously used in Romanian medical and pharmaceutical literature to designate the conifer family (currently Pinaceae). In old treatises of medical botany, the term grouped resinous trees such as the fir or spruce, recognized for their balsamic, respiratory antiseptic, and expectorant properties, being heavily utilized in traditional medicinal syrups and anti-rheumatic ointments.
• Aesculus — A genus of woody plants, deciduous trees, and shrubs belonging to the Sapindaceae family (formerly Hippocastanaceae), distributed throughout the temperate regions of the Northern Hemisphere. These species are structurally characterized by palmate-compound leaves, large erect thyrsus-like inflorescences, and globose, often spiny capsular fruits containing large seeds popularly known as chestnuts.
• Aesculus hippocastanum — Scientific name of the horse chestnut, an imposing deciduous tree native to the mountainous forests of the Balkan Peninsula, widely cultivated as an ornamental plant in temperate zones. It is structurally recognized by its globose crown, white flowers with red or yellow spots grouped in erect panicles, and spiny capsules containing seeds rich in aescin, a substance extensively used in pharmacology to treat venous disorders.
• 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.
• Agathis robusta — A species of giant conifer within the genus Agathis, family Araucariaceae, commonly known as the Queensland kauri. This tree is endemic to the tropical and subtropical rainforests of eastern Australia and Papua New Guinea, distinguished by its perfectly straight trunk, devoid of lower branches, and a dense canopy, holding immense ecological value in biodiversity conservation and major historical importance in the high-quality timber industry.
• Persian silk tree — A species of exotic ornamental tree in the legume family, native to Central and Eastern Asia, commonly known as the 'Persian silk tree'; it is characterized by a fan-shaped canopy, bipinnate leaves that fold closed at night, and spectacular globular inflorescences composed of long, silky, vibrant pink stamens.
• Grafted — Having undergone the grafting process; a fruit tree or noble plant grafted onto a resistant rootstock. As a neuter noun, it represents the actual action of joining the scion with the rootstock or the period when this horticultural work is executed.
• Grafted — Having undergone a grafting operation; a noble plant or fruit tree structurally joined with a rootstock; as a neuter noun, it represents the action or the result of the grafting process.
• Anemomorphy — A morphological modification, shape anomaly, or structural adaptation acquired by a plant organism (or a geological body) under the direct, intense, and asymmetric influence of dominant winds. In botany, this phenomenon leads to asymmetric tree canopies known as flag trees.
• Anemomorphosis — An adaptive morphological or structural modification of plants, caused by the mechanical and constant action of strong winds. This ecological phenomenon leads to the deformation of tree crowns (flagging), stunting of vegetation, or bending of stems to reduce air resistance and survive in exposed environments.
• Grey alder — A species of tree from the Betulaceae family (Alnus incana), featuring smooth grey-white bark and ovate leaves covered with greyish hairs on the underside. It is a medium-sized, frost-resistant tree that grows wild in mountain river floodplains and hilly areas, playing a crucial ecological role in stabilizing eroded soils and fixing nitrogen biologically through root nodules.
• Small alder — A diminutive form for 'anin' (alder); a small alder, an alder sapling, or a young shrub belonging to the genus Alnus. The term is used regionally or in poetic and folk language to describe young alder specimens growing clustered on stream banks, remarkable for their bright green foliage and thin flexible stem.
• Annona — An institution, administrative service, or tax in Ancient Rome responsible for the collection, storage, and centralized distribution of grain and staple foods to the urban population. In the field of botany, capitalized (Annona), it denotes a genus of tropical trees and shrubs from the Annonaceae family, cultivated for their large, fragrant, edible fruits.
• Forest stand — A homogeneous community of trees located within a specific forest area, characterized by structural uniformity regarding species composition, age, density, origin, and development pattern. It represents the basic unit in forestry for implementing management, logging, regeneration, and forest protection measures.
• Arboretum — A specialized botanical garden or managed natural area dedicated to the cultivation, collection, and scientific study of a wide variety of tree, shrub, and woody plant species kept in optimal development conditions. These spaces serve as nurseries for dendrological biodiversity conservation, acclimatization of exotic species, and public ecological education.
• Trees — The plural form of the noun 'arbore' (trees); communities or groups of perennial plants with a woody trunk and a branched crown. In engineering, it denotes multiple cylindrical shafts designed for transmitting rotational motion, while in computer science it refers to multi-branching hierarchical data structures.
• Arboreal — Regarding animals, insects, or organisms: that lives, carries out its activities, builds its shelter, or seeks its food in trees (on trunks, branches, or in the tree crown). In a broader ecological sense, the term describes morphological or behavioral adaptations specific to fauna suited to the high forest environment.
• Maples — The plural form of the regionalism 'arț' (maple trees); deciduous trees of the genus Acer, characterized by dense, yellowish-white wood and palmate-lobate leaves. In the popular dialect of certain mountainous rural communities, the term is used to describe clusters or groves of young maple trees grown spontaneously at the edge of deciduous forests.
• Asimina trees — A Romanianized vernacular term or plural variant used extremely rarely in old dendrological literature to designate trees belonging to the Asimina genus; pawpaw trees. In a structural sense, it defines the Europeanized representatives of the Annonaceae family capable of withstanding extreme negative temperatures in a temperate climate.
• Attalea — A genus of tropical palms native to the warm regions of Central and South America, belonging to the family Arecaceae, known for their impressive size and robust trunks. These plants exhibit a remarkable adaptive structure, featuring gigantic pinnate leaves and nut-like fruits from which high-quality industrial vegetable oils or strong fibers used in manufacturing are extracted.