I have eaten Ramaria formosa before, by accident, thinking that was I'd collected was growing on buried wood. They did not taste good. Maybe if you cooked them until the cows come home...
I suppose they are edible, because I did not get sick. By that definition, I suspect most mushrooms are "edible." And in fact, every mushroom is edible...once. Experimenting on your own is not the way to go if you expect to live a good, long life.
Regards,
Bruce