Family, Mallow. Color, white, with a deep crimson center. Underneath the calyx are many pointed green bracts. Calyx, 5-cleft. Corolla, of 5 separate large petals. Stamens, collected on a column, which is divided at the summit into 5 styles. Leaves, acute at apex, broad toward the base, ovate, palmately veined. The fruit becomes a large, 5-valved capsule. July to September.

This is similar to the swamp rose mallow so familiar to those who travel over the Hackensack marshes, near Jersey City. The white species grows also in marshes, especially salt marshes near the coast. Massachusetts to Florida.