dwarf larkspur, Delphinium tricorne

Apparently dwarf larkspur varies in color, with paler or sometimes white flowers. In my experience they have all been like this. Right at the top of that chroma scale. Called dwarf because it's two-foot stature is less than other eastern larkspurs, but it's far from the smallest. This is a woodland plant in AL, AR, GA, IA, IL, IN, KS, KY, MD, MN, MO, MS, NC, NE, OH, OK, PA, SC, TN, VA, and WV. Beal Gardens, MSU, 5/28/19.