Puccoon blooms at the Indiana Dunes with the Lupines. In fact it is covering areas of the dunes in a mass of yellow.
The Hoary in the plant's name means hairy; it has hairy leaves. The Puccoon is an Indian word that means dye and its roots can be pulverized to make a red dye.
Butterflies and bees love the flowers. I watched many a Red Admiral flutter around the sunny blooms.
Sources: "The Natural Heritage of Indiana," Wikipedia