The mahogany seedpod opening!
This is the seedpod I sketched last week:
The brown seed in the foreground has a wing on it, I presume for air travel away from the parent tree. The outer husks were falling off as I sketched and painted this one. Old Florida crafters used to insert a nail in the tip of the pod, and as the pod opened, it stayed together and made a flower-shaped ornament after it fully opened. Squint a bit and you can visualize what it would look like. I haven't seen any of these crafts in years, though.
I found a fascinating video of these pods on the tree from this site:
It's a different species but they look identical (to me, anyway). The video shows how the pods open on the tree, which is pretty cool.