A Botany Lesson

When I tell people that I use strawberry sepals in my collages (http://www.ellenhalloran.com) they always respond "What's a sepal"?
If you aren't ready to search the dictionary I can tell you that it's part of the structure of a flower.  They're the leafy green parts that add to the form of the calyx.  Look up 'flower' and you will usually find a simple illustration of the parts of a flower.
I cut the sepals from the strawberry and then use a process to clean and preserve them.  Here they are right after being cut from the strawberry.