Aquilegia (commonly known as granny's bonnet or columbine) is a genus of about 60-70 species of perennial plants that are found in meadows, woodlands, and at higher altitudes throughout the Northern Hemisphere, known for the spurred petals  of their flowers.
|flower and fruit of Aquilegia vulgaris (type species)|
60-70, see text
- Sunset Western Garden Book, 1995:606–607
- Puzey, J.R., Gerbode, S.J., Hodges, S.A., Kramer, E.M., Mahadevan, L. (2011) Evolution of Aquilegia spur length diversity through changes in cell anisotropy. Proceedings of the Royal Society B.