Exotic weed from Europe, presumably came over with hay. Likes open waste places and road sides. Rare in Wildwood: I've not seen it. However, it is common in the area and even occurs just outside the Park, so there is no reason not to find it in the Park someday. (The pictures were taken on the Bisset side of the tunnel.)

The habitat and long spikes of yellow flowers are distinctive characters. White sweet clover (M. albus) is very similar, except for the flower color; it is common in the Park.