Banks of wild flowers - centaury, wild carrot, harebell, bird's foot trefoil, purging flax and thrift adorn the route.
In the American button-bush the heads are globular, in some species of teazel elliptical, while in scabious and in composite plants, as sunflower, dandelion, thistle, centaury and marigold, they are somewhat hemispherical, with a flattened, slightly hollowed, or convex disk.