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Botanical Nerd Word: Papilionaceous

Papilionaceous: Butterfly-like, as the irregular corolla of a pea, with a banner petal, two wing petals, and two fused keel petals.*

Baptisia is a member of the pea family (Fabaceae). It has classic papilionaceous flowers.

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

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