Aquilegia caerulea is a species of Aquilegia flower native to the Rocky Mountains from Montana south to New Mexico and west to Idaho and Arizona. Its common name is Colorado blue columbine; sometimes it is called “Rocky Mountain columbine”, but this properly refers to Aquilegia saximontana.
Colorado blue columbine
Yellow-pink color variant
It is a herbaceous perennial plant growing to 20–60 cm tall. The flowers are very variable in color, from pale blue (as in the species name caerulea) to white, pale yellow and pinkish; very commonly the flowers are bicolored, with the sepals a different shade to the petals.
Aquilegia caerulea is the state flower of Colorado. It is also an ornamental plant in gardens, with numerous cultivars selected for different flower colors.
There are five varieties:
Aquilegia caerulea var. alpina
Aquilegia caerulea var. caerulea
Aquilegia caerulea var. daileyae
Aquilegia caerulea var. ochroleuca
Aquilegia caerulea var. pinetorum
cv. ‘Crimson Star’ in visible light, UV (showing nectar guides), and IR.
Cultivars include ‘Origami’  and ‘Crimson Star’.
^ Trim Tree Nursery: Aquilegia caerulea ‘Origami Mix’
Wikimedia Commons has media related to Aquilegia caerulea.
USDA Plant Profile: Aquilegia caerulea
Colorado state flower
Aquilegia coerulea Genome sequencing
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