Frankly, you don’t see these seeds in their pods very often.
When the pods open, the seeds shoot out. What you usually see on the plants are open, empty seed pods.
Please leave a comment if you recognize these mystery seeds.
I’ll post the answer next Tuesday.
I think it’s from what we used to call wait-a-bit. It’s similar to catclaw, but smaller.
Is this the one you are thinking of? http://www.fireflyforest.com/flowers/1615/mimosa-aculeaticarpa-var-biuncifera-catclaw-mimosa/
If so, it is a new one for me.