#classification

• Artemis — An adapted form or literary variant for Artemis, the goddess of the hunt, forests, wild animals, and the Moon in Greek mythology, twin sister of Apollo; (in astronomy) a designation attributed to certain celestial bodies, asteroids, or large planetary geological structures; (in biology) a name used regionally or scientifically in the classification of certain medicinal or aromatic plant species from the Artemisia family or aquatic organisms from the Artemia genus.
• Asparagus verticillatus — The scientific name of an herbaceous perennial plant in the family Asparagaceae, commonly known in Romania as 'umbra-iepurelui'; it is a vigorous climbing or scrambling species, distributed spontaneously across xerophytic forests, thickets, and edges of Southeastern Europe and Western Asia, characterized by cladodes grouped in dense whorls along long stems and spherical red berries.
• Asperula — A genus of annual or perennial herbaceous plants in the Rubiaceae family, distributed mainly throughout the temperate zones of Europe and Asia; it comprises dozens of species with whorled leaves and small, tubular flowers, often white, pink, or bluish, with some varieties historically used in folk medicine or as ornamental plants due to their pleasant coumarin scent.
• Asplenium adiantumnigrum — A fern species in the genus Asplenium, popularly known as black spleenwort; it grows on siliceous rocks, old stone walls, and acidic soils in temperate regions. It is characterized by ovate-lanceolate, bi- or tri-pinnately divided fronds of a glossy dark green, supported by rigid stipes that are brownish-black at the base, a structural chromatic trait from which the specific epithet 'adiantum-nigrum' originates.
• Asporogenous — Not producing spores, not reproducing through spores, or belonging to a species of microorganisms lacking the capacity to generate resistance endospores; an adjective used in bacteriology to classify vegetative bacteria (such as asporogenous forms) that are sensitive to heat and disinfectants, as opposed to sporogenous bacteria.
• Assamicum — A specific epithet used in binomial botanical nomenclature (the masculine/neuter form of the Latin adjective assamicus), indicating the geographical origin or connection of a species or variety to the Indian region of Assam; most commonly encountered in the scientific name of the large-leaf tea plant, Camellia sinensis var. assamica.
• Astaciform — Having the shape, appearance, or anatomical structure resembling that of a crayfish (of the genus Astacus); a morphological adjective used in biology to describe the exterior appearance of certain fossil or contemporary crustaceans presenting a robust cephalothorax, segmented abdomen, and prominent claws.
• Astelia — A genus of perennial, often dioecious and partially epiphytic herbaceous plants in the Asteliaceae family, primarily native to regions of the Southern Hemisphere (New Zealand, Australia, Pacific islands, and South America); characterized by long, sword-shaped leaves arranged in a compact basal rosette, often covered with silvery, velvety hairs, and globally used as ornamental plants due to their architectural exotic appearance.
• Asteriscus — A genus of herbaceous or suffruticose plants in the Asteraceae family, distributed primarily throughout desert, Mediterranean, and Macaronesian regions; characterized by large, bright golden-yellow flower heads surrounded by a rigid whorl of green leaf-like bracts, highly resilient to severe drought and salinity conditions.
• Astilbe — A genus of perennial herbaceous plants in the Saxifragaceae family, native to the damp forests and mountain ravines of East Asia and North America; they are widely cultivated as ornamental shade plants, prized for their elegant, deeply divided fern-like foliage and spectacular flower heads shaped as fluffy, plume-like panicles colored in white, pink, red, or violet.
• Astrophytum capricorne — A species of xerophytic plants within the Astrophytum genus (Cactaceae family), native to the semi-desert regions of Mexico (Chihuahuan Desert), characterized by a spherical stem that becomes cylindrical at maturity, divided into 7-8 sharp ribs. The species is distinguished by its long, flexible, flattened, and twisted spines reminiscent of a goat's horns (or a capricorn's), and by its large, yellow flowers with a deep purple or red center.
• Astrophytum myriostigma — A species of succulent cacti within the Astrophytum genus (Cactaceae family), native to the mountainous and arid regions of central and northern Mexico. The plant has a globose stem completely lacking spines, typically divided into 5 prominent ribs, giving it a three-dimensional star shape; its entire epidermis is densely covered by thousands of trichomes (microscopic white dots), giving it a characteristic silver-white hue, and its large flowers are pure yellow without a red center.
• Passenger car — A self-propelled road vehicle equipped with four or more wheels, structurally designed for transporting a small number of persons (usually a maximum of 9 seats, including the driver's) and their luggage. It is powered by an internal combustion, electric, or hybrid engine, and is intended for use on public roads for utility, recreational, or personal purposes.
• Azureum — A term of Latin origin used in international scientific nomenclature (botany, zoology, microbiology) as a specific epithet to designate species of plants, insects, or microorganisms that display a characteristic azure-blue coloration. In a structural sense, the word serves as a morphological indicator in taxonomy for the visual identification of specimens.
• Twiggy baeckea — The old or synonymous scientific name for Babingtonia virgata (or Sannantha virgata), an erect perennial shrub in the family Myrtaceae. The plant is popularly known for its long, slender (virgate) twigs, deep green linear leaves, and an abundance of small white flowers, often used in horticulture as a hedge or ornamental plant.
• Bafflestone texture — A type of autochthonous carbonate sedimentary rock (limestone), according to the revised Dunham classification (Embry and Klovan), where the original organic components (such as fan-shaped corals or calcareous algae) grew together during deposition, acting as baffles that slowed down water flow and trapped fine sediment.