This is a wonderful link. After searching all morning to identify this plant growing in my yard, I found this link. Within 2 minutes with little scientific knowlege, I was able to correctly identify my plant. (It was periwinkle.)

YOu simply check the characteristics of the plant you have, as best you can, and hit submit. Possible matches come up.

In my case, there was only one possible match. The pictures I found verified that my plant was, indeed, periwinkle.

I'd never planted it, but after reading about it, I think I'll be keeping it.

This is a great link for kids or anyone doing a wildflower collection, or folks just trying to figure out what THAT IS in their yard.