I didn't know you could start irises from seed. Once an iris flower dies, a pod grows. They start off green. Once the seeds inside are ready to pick, the pod turns tannish or brown and cracks open. Gather seeds & plant again
Coral Bean - The red seeds of Coral Bean (Erythrina herbacea) remain nestled in their open pod. They are toxic to humans, and since they have persisted into the late Winter it seems likely that there are no animals there that eat them.