#scientific binomen
- Arnebia echioides — The scientific name of a perennial herbaceous plant species in the Boraginaceae family, native to the Caucasus and mountainous regions of Iran, popularly known as the 'prophet flower'. It is remarkable for its golden-yellow flowers that initially feature five distinct large, black-purple spots that fade completely as the flower ages.
- Arnica alpina — The scientific name of a perennial herbaceous plant species in the Asteraceae family, commonly known as alpine arnica or arctic arnica. It is adapted to extreme alpine and subarctic environments across northern Eurasia and North America, featuring low growth, dense protective hairs, and solitary yellow flower heads.
- Arnica lanceolata — The scientific name of an herbaceous plant species in the Asteraceae family, commonly known as lanceleaf arnica. It is native to mountainous, moist regions of western and northeastern North America, recognized by its elongated, lance-shaped leaves, finely toothed margins, and glandular stems supporting bright yellow flower heads.
- Arnica montana — The scientific name of the type species of the genus Arnica, a perennial herbaceous plant native to European mountainous regions, commonly known as mountain arnica. Highly valued worldwide in phytotherapy, its golden-yellow flower heads are rich in sesquiterpene lactones (especially henelalin), utilized exclusively externally for anti-inflammatory and analgesic treatments of bruises and muscle strains.
- Aronia arbutifolia — The scientific name of a deciduous shrub species in the Rosaceae family, commonly known as red chokeberry. Native to eastern North America, it is distinguished by its bright red glossy berries that persist through winter and its vibrant crimson autumn foliage.
- Aronia melanocarpa — The scientific name of the black chokeberry, a deciduous shrub in the Rosaceae family, native to eastern North America. Its dark purple-black berries are recognized globally as a superfood due to their exceptionally high concentration of antioxidants and polyphenols, featuring a distinctively astringent taste.