Gardening ID: What is this plant?

[rbeau30]

Thought I would start this thread. I am sure more folks could get help here with stuff that pops up in the yard and don't know what it is.

It is a legume plant, like a miniature pea. I don't recognize the leaves they are compound leave I think and they are blocky at the end like someone trimmed them.

If I leave them on the vine, the pods turn black, not like they are going bad, but like they are drying out. The pod is very leathery.

Anyone have an idea? I read that some peas could be poisonous?







EDIT: Now that I posted this maybe this thread should be in the DIY thread? If so please move MODs, SORRY!