#Australia

• Aborigines — A historical, ethnological, and anthropological name used internationally to denote the indigenous populations native to Australia (Australian Aborigines) who inhabited the continent prior to the arrival of European colonizers; (in ancient history) a term used by classical Roman authors to refer to the earliest mythological or prehistoric inhabitants of the Latium region in Italy, considered to have been settled there 'from the beginning' (ab origine).
• Winged wattle — A rare and deeply fascinating dwarf shrub species, endemic to the temperate regions of southwestern Western Australia, morphologically remarkable for its deep green, flattened stems transformed into broad, wing-like structures (phyllodes) that take over the function of evolutionarily reduced leaves. Popularly known as the 'winged wattle', this species is distinguished by its brilliant cream-yellow or yellowish-white globular inflorescences, displaying a unique and spectacular structural adaptation to dry summers and periodic bushfires.
• Knife-leaf wattle — A remarkable species of medium-sized evergreen shrub, native to the dry regions of New South Wales and Queensland, Australia. The plant is distinguished by a unique morphological profile, characterized by asymmetric, rigid, triangular phyllodes (modified stems acting as leaves) that resemble a knife blade or hatchet, sporting an elegant glaucous-green or silvery tint. It is highly valued in landscaping due to its drought tolerance and spectacular spring bloom, when its arching branches become completely smothered in dense clusters of intensely fragrant, bright golden-yellow flowers.
• Drummond's wattle — A dwarf species of ornamental shrub, endemic to the southwestern regions of Western Australia, renowned for its outstanding structural elegance. Unlike many acacia species that develop phyllodes, Acacia drummondii retains its true leaves, featuring a fine, delicate, evergreen, bipinnate foliage of a deep green hue. The plant is distinguished during its flowering season by its atypical, cylindrical, and pendulous inflorescences (resembling catkins or tassels) of an intense canary-yellow, making it considered one of the most refined and decorative small species within the genus.
• Prickly moses — A species of small thorny shrub endemic to southwestern Western Australia, remarkable for its ecological value and delicate beauty. The plant features true, finely divided, deep green bipinnate leaves, protected by sharp stipular spines located at the stem nodes. Popularly known as the 'prickly moses', this species is famous not only for its brilliant golden-yellow globular inflorescences, but also for its unique capacity to fix nitrogen in the soil and to display a natural resistance against the destructive attacks of the dieback fungus Phytophthora cinnamomi.
• Adelaida — A proper noun of Old High German origin (Adalheidis), composed of the elements 'adal' (noble) and 'heid' (kind, sort, essence), meaning 'of noble birth' or 'of a noble nature'. As a geographical name, it represents the Romanian variant for Adelaide, the capital city of South Australia. Historically, it was borne by empresses and holy queens of Western Europe.
• Adelaide — A proper noun designating the capital city of the state of South Australia, a major urban, cultural, economic, and academic center located on the southern coast of the Australian continent near Gulf St Vincent. The city is globally recognized for its rigorous grid-based urban planning surrounded by vast parklands, founded in 1836 and named in honor of Queen Adelaide of the United Kingdom.
• Adiantum formosum — A species of large terrestrial fern in the Pteridaceae family, native to the rainforests and moist forests of eastern Australia and New Zealand. This plant develops structurally through deep, creeping rhizomes and produces finely divided, compound fronds that can reach heights of over one meter, supported by long, rigid, glossy-black petioles, cultivated ornamentally for its lush appearance.
• 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.
• 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 marginata — A secondary scientific name or historical synonym utilized in botanical taxonomy for a shrub species in the family Myrtaceae (genus Agonis), native to Western Australia; characterized by evergreen leaves and dense capitate inflorescences. In modern nomenclature, this taxon has been revised or reassigned.
• Crested wattle — A distinct shrub or small tree in the legume family, native to Western Australia, commonly known as the 'crested wattle' or 'plume albizia'; it is characterized by rapid growth, dark green pinnate leaves, and dense, cylindrical, greenish-yellow or cream inflorescences resembling small brushes.
• Ammobium alatum — The scientific binomial name for the winged everlasting, a species of perennial or annual herbaceous plant in the Asteraceae family, native to eastern Australia. The plant is structurally characterized by erect stems equipped with lateral membranous wings and flower heads consisting of a deep yellow center surrounded by rigid, papery white bracts, widely cultivated globally for durable dried floral arrangements.
• Kangaroo paw — A genus of herbaceous perennial plants, native to the arid regions of Southwestern Australia, belonging to the Haemodoraceae family. Commonly known as 'Kangaroo paw' due to the tubular, curved, and velvety hairy shape of its inflorescences, this structural plant develops long flowering stalks emerging from a rosette of sword-like leaves, being highly valued worldwide in xeriscaping and as a cut flower.
• 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.
• Red and green kangaroo paw — An iconic species of the Anigozanthos genus, famous as the floral emblem of Western Australia, remarkable for the spectacular chromatic contrast of its inflorescences. The structural plant develops simple or poorly branched flowering stalks, covered with fiery red hairs at the upper part, from which intense emerald-green tubular flowers emerge, requiring strict drainage conditions and a warm climate to survive.
• Golden kangaroo paw — A rhizomatous perennial species of the Anigozanthos genus, remarkable for its bright golden-yellow inflorescences covered with dense yellow and red hairs. This structural plant grows on dry, sandy soils of Southwestern Australia, forming branched flower stalks that provide a stunning visual display during summer, being highly valued in dried floral arrangements due to its ability to retain intense color after cutting.
• Red kangaroo paw — A herbaceous perennial species of the Anigozanthos genus, remarkable for the deep red, purple, or maroon color of its tubular flowers. This structural plant develops vigorous, branched flowering stalks completely covered in fine red hairs, creating a deep velvety appearance, and is widely cultivated in Mediterranean climate regions or warm greenhouses due to its high ornamental value.
• Aotus — A taxonomic genus comprising the night monkeys (or owl monkeys) native to the tropical forests of Central and South America, being the only anthropoid monkeys with predominantly nocturnal activity. In botany, it also represents a genus of flowering plants in the Fabaceae family, endemic to Australia, remarkable for their yellow or golden flowers.
• Aotus gracillima — A partial scientific name or cataloged variant (often an abbreviation for an application form, subspecies, or 'apud' publication) referring to the botanical species Aotus gracillima, a shrub endemic to Western Australia. This slender, graceful plant belongs to the Fabaceae family and is characterized by delicate branches and dense inflorescences specific to heathland vegetation.