Herbage glabrous or hairy. Leaf blades ± triangular to triangular-hastate, basal lobes truncate or 2-pointed, basal sinus almost closed. Bracts intergrading with sepals, 16–26 × 5–12 mm, prox­imally ± keeled, apex acute to obtuse. Flowers: corolla pink, 45–60 mm; stamens 25–30 mm.

Flowering Jun–Sep. Dis­turbed sites, swamps; Ont., Que.; Ill., Ind., Mich., Mo., N.J., N.Y., Oreg., Pa.