Lichen (@Lichen)

@fox omg yessss that's so great! Really delighted to hear that.

I just pulled out 'California Plant Families' by Glenn Keator cause it has a pretty good glossary, and it says a sepal is the outermost whorl of a flower, the calyx is the collective term for all the sepals, and a bract is any modified leaf associated with a flower (I've heard 'associated with the reproductive structures of the plant' as well) So I'm not super clear on if sepals can also be bracts? It seems like one of those things where sometimes there's a clear distinction (a sunflower's involucre of bracts surrounds the flower head, not each individual flower, so we can say they're not sepals pretty confidently I think) but for something like an oak flower it seems fuzzier where the whorls of the flower end and the involucre begins and the model we use to categorize things breaks down a little.
I feel like this is a very long winded way of me saying I don't really know haha