The Royal Botanical Gardens Kew Index of Plant Species

• Aquilegia alpina — A species of perennial plants in the genus Aquilegia, native to the alpine meadows and rocky areas of the Alps; this structural plant is recognized by its large, intense-blue or violet flowers, being protected in spontaneous flora and highly appreciated as an ornamental plant in alpine gardens due to its resistance to low temperatures.
• Aquilegia sibirica — A species of herbaceous perennial plants in the genus Aquilegia, native to the coniferous forests, glades, and alpine meadows of Siberia, Mongolia, and Central Asia; this structural plant stands out for its spectacular bicolor flowers, usually featuring large intense blue-violet sepals and white inner petals, being extremely hardy in severe subarctic climates.
• Aquilegia transsilvanica — A species of herbaceous perennial plants in the genus Aquilegia, endemic to the mountain chain of the Romanian Carpathians (especially in the high limestone areas of Bucegi, Piatra Craiului, and Făgăraș); this structural plant stands out for its large, intense blue-violet flowers, being declared a monument of nature and strictly protected in alpine reserves due to its restrictive geographical range.