#Brazil

• Alagoas — A component state located in the northeastern region of the Federative Republic of Brazil, bordered by the states of Pernambuco, Sergipe, and Bahia, with an extensive opening to the Atlantic Ocean; its capital and largest urban center is Maceió. This administrative territory is structurally distinguished by its diversified relief comprising a coastal plain dominated by spectacular lagoons and coral reefs, a semi-arid plateau area in the interior called sertão, and an economy historically based on sugar cane monoculture, summer tourism, and oil production.
• Aleijadinho — The nickname and established artistic name of Antônio Francisco Lisboa, a famous Brazilian sculptor and architect from the colonial period, recognized as the greatest representative of the Baroque and Rococo styles in Latin America. Despite a severe degenerative disease that deformed his hands and feet, he sculpted monumental masterpieces in wood and soapstone, his name literally meaning 'The Little Cripple' in Portuguese.
• Alencar — A surname of Portuguese origin, rendered famous in universal culture due to José de Alencar, a prominent 19th-century Brazilian writer, playwright, and politician, considered one of the main pillars of romanticism in Latin American literature and the founder of the Indianist novel (through masterpieces such as O Guarani and Iracema), a body of work structurally focused on harnessing national Brazilian myths and identity.
• Amado — A masculine given name and surname of Iberian (Spanish and Portuguese) origin, etymologically meaning 'loved' or 'beloved'. Culturally, it is fundamentally linked to the Brazilian author Jorge Amado, a leading figure of Latin American modernist literature.
• Amapá — A federal state located in the northern region of Brazil at the mouth of the Amazon River, bordered by French Guiana, Suriname, and the state of Pará. With its capital in Macapá, the region is globally famous for its rich Amazonian biodiversity and dense protected rainforests.
• Amazonas — The largest federal state in Brazil by area, located in the northern region of the country, with its capital in Manaus. Its territory is almost entirely covered by the Amazon rainforest; the name is also shared by an administrative region in Venezuela, Colombia, and Peru.
• Anapolis — A major city and important economic center located in the state of Goiás in the central-western region of Brazil, strategically positioned between the federal capital Brasília and the state capital Goiânia. Founded at the end of the 19th century, the city evolved into a premier logistic and industrial hub of the country, particularly recognized for its massive pharmaceutical cluster, modern agroindustrial district, strategic military airbase, and rail and road infrastructure connecting internal agricultural regions to major ports.
• Anemia mandioccana — A species of perennial fern in the genus Anemia, family Anemiaceae, endemic to the humid tropical forests of Brazil (notably the Atlantic Forest biome). This structural botanical entity is characterized by short, creeping rhizomes, pinnately compound sterile fronds with rigid ovate segments, and an erect fertile axis branched at the base elevating the sporangia-bearing panicles.
• Angelonia cornigera — The scientific name for a rare and endemic herbaceous plant species within the Angelonia genus, Plantaginaceae family, native to the semi-arid regions of northeastern Brazil (Caatinga biome). This structural plant distinguishes itself from other related species by the particular morphology of its flowers, which feature sharp, horn-shaped protrusions or appendages (cornigera), adapted for interacting with specific species of oil-collecting bees that ensure pollination.
• Angelonia gardneri — The scientific name for an herbaceous plant species in the Angelonia genus, Plantaginaceae family, native to tropical regions of South America, particularly Brazil. This structural plant grows in compact clusters, featuring erect stems covered with fine glandular hairs, elongated leaves, and bilabiate flowers intensely colored in shades of blue or purple. It is recognized in plant ecology studies for secreting volatile oils within the corolla, substances used as an ecological reward to attract specialized pollinating insects.
• Apa — The name of a border river located in South America, which originates in the Amambay massif in Brazil and flows westward, forming an extensive natural border between Brazilian and Paraguayan territories until its confluence with the Paraguay River. This watercourse plays a crucial ecological and geopolitical role in the region.
• Aphelandra atrovirens — An endemic species of dwarf plants within the Aphelandra genus, native to the humid tropical rainforests of Brazil. It is characterized by ovate-elliptic leaves of an extremely dark green, glossy, often with purplish hues on the underside and discrete veins, cultivated as a rare, small-stature decorative plant.
• Aphelandra liboniana — A species of perennial tropical plant in the genus Aphelandra, native to the humid forests of Brazil. It is cultivated internationally as an ornamental plant, valued for its large, ovate, deep green leaves and its spectacular spike-like inflorescences consisting of reddish-orange bracts from which yellow flowers emerge.
• Aracaju — A coastal city and the capital of the state of Sergipe, located in the northeastern region of Brazil, at the mouth of the Sergipe River into the Atlantic Ocean. It is recognized as one of Brazil's first urban-planned cities, featuring a distinctive chessboard street grid, and serves as an important economic, academic, and tourism hub, famous for its beaches and the Atalaia boardwalk.
• Araguaia — A major river located in the central region of Brazil, over 2600 kilometers long, flowing from south to north to empty into the Tocantins River. It holds exceptional geographic and ecological significance, serving as a natural boundary between the Brazilian states of Goiás, Mato Grosso, Tocantins, and Pará, and dividing into two main branches in its middle course to form Ilha do Bananal, the world's largest fluvial island.
• Araucaria angustifolia — A critically endangered species of evergreen conifer in the genus Araucaria, native to southern Brazil and neighboring areas of Argentina and Paraguay, popularly known as the Paraná pine or candelabra tree. This majestic tree, characterized by narrow, rigid leaves and an umbrella-shaped crown at maturity, is the dominant element of the mixed ombrophilous forests, carrying crucial ecological importance.
• Aristolochia brasiliensis — An exotic species of perennial climbing plant in the Aristolochiaceae family, native to the wild flora of Brazil. It is remarkable for its vegetative vigor and gigantic, bilobed, purplish-brown flowers with yellow markings, which emit an unpleasant, fetid odor designed to attract flies for pollination. Due to its unusual ornamental appearance, it is used in tropical landscaping, though it retains the toxic profile characteristic of the genus.
• Arrojadoa — A genus of xerophytic plants within the Cactaceae family, endemic to the semi-arid regions of eastern Brazil, particularly inside the caatinga vegetation. It is characterized by slender, cylindrical, erect or decumbent, jointed stems that develop a woolly and bristly apical cephalium from which bright, tubular flowers emerge, adapted for hummingbird pollination.
• Arrojadoa penicillata — A particular cactus species within the Arrojadoa genus, endemic to the state of Bahia in Brazil. It is distinguished by slender, highly branched, and often shrubby stems whose segmented tips form a dense apical cephalium covered with fine, long hairs resembling a small brush (penicillate), from which vivid pink or purplish-red tubular flowers erupt.
• Arrojadoa rhodantha — A xerophytic species of cactus within the Arrojadoa genus, endemic to eastern Brazil (particularly in the states of Piauí, Ceará, Pernambuco, and Bahia), characterized by cylindrical, semi-erect or scrambling stems that develop a ringed apical cephalium covered with brownish or white wool and stiff reddish bristles. Its flowers are tubular, intense pink-magenta or bright red, adapted for hummingbird pollination within rocky caatinga habitats.