Identify This Seed

[dtv]

Someone gave me these seeds a number of years ago and I neglected to mark the bag. I've forgotten what they are.

They are black, look like a black bean only slightly flatter, and have a touch of white about a third of the way around the edge.

Sound familiar to anyone? I know it's not a vegetable. It is a flower or bush or tree.

[fdthompson]

I think it might be a hyacinth bean seed. Of course it's hard to tell without a picture.

Here's a link to a picture I found, maybe this will help.

http://en.wikipedia.org/wiki/Image:Lablab_purpureus_Steve_Hurst_1.jpg