Cotton wood tree “seeds”
I recall as a kid I used the pea sized green "seeds" from our backyard cotton wood tree as ammo for my pea shooter made from a willow branch. These "seeds" looked like exactly like peas but contained a cottony fiber. What is the official name for these "peas"? I recall they hung in clusters. Perhaps my memory is faulty from age.
These peas are the fruit of the cottonwood. If allowed to mature, they open and release the cotton fibers we all know so well.