Botanical Nerd Word: Pseudanthium

A sunflower

Pseudanthium: A compact inflorescence of many small flowers which simulates a single flower.*

While sunflowers look like one massive flower at the top of the stalk, they are actually composed of hundreds of tiny flowers packed together into a head.

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