Columbine (Aquilegia canadensis) bloom showing spurs
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Botanical Nerd Word: Calcar

Calcar: A spur or spur-like appendage.*

The petals of columbines (Aquilegia spp.), such as this A. canadensis, form spurs out the back of the blooms. The genus name, Aquilegia, comes from latin aquila (eagle) because the flowers’ spurs resemble the talons of an eagle.

*Harris, J.G., Harris, M.W. (2001). Plant identification terminology: An illustrated glossary (2nd ed.). Spring Lake: Spring Lake Publishing.

 

 

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