crown vetch

Neat! Thanks, never heard of that one before. :)

Well, not so neat, actually. It's considered an invasive species in most, if not all, states. A real spreader, crown vetch was originally planted for erosion control, but it is now
located along roadsides, rights-of-way, open fields, waste grounds and on gravel bars along streams, etc.

Here is a link that might be useful: Crown vetch

Forty years ago I had an aquaintance who was in some sort of doctoral program in botany or maybe ecology at the University of Illinois. She proudly pointed out to us the wonderful crown vetch which had been planted at the cloverleaf....