Aquilegia longissima (Long-spur columbine) is a rare perennial herb that is native to northern Mexico, Trans-Pecos Texas and southern Arizona. In the original species description by Asa Gray in 1883, Aquilegia longissima is distinguished from the shorter-spurred golden columbine Aquilegia chrysantha based on the extremely long spur over 10 cm long, narrow spatulate petals, and very slender spurs that usually hang straight down. The plants typically flower in the fall after monsoon rains and are found in oak-pine-juniper woodlands in shaded canyons near intermittent streams or on talus slopes.