We have two identical big trees right behind our property in Southern California that just started dropping their pods and seeds into our yard and we're having a hard time to keep our two-year-old daughter from tasting them. I've spent the last hour or so on Google and various tree identification websites, but I can't for the life of me (or my daughter?) find out what this tree is called so I can check whether it is poisonous. I don't even know why this is hard, since the seeds alone are quite unique and should provide a lot of good keywords for a Google search: It has 3 seeds per pod. The seeds are very black and covered by a bright red waxy skin.
Here is a picture of the leaves and pods lying on a letter sized sheet of paper (the pods are about 3/4" wide and the leaves around 4" long):
One of just the seeds in the pod:
And here is the whole tree:
The only thing that I've found that has even remotely similar looking fruits is the Ackee, but its fruits are much bigger and the skin is a white flesh, not red and waxy.
Any idea what this tree might be, and whether its fruits are poisonous?