We have two local spring wildflowers that are very similar: Dutchman's Breeches Dicentra cucullaria and Squirrel Corn Dicentra canadensis. This makes sense as they are after all in the same genus, the name referring to their flowers having 2 spurs. Both are spring ephemerals (blooming and reproducing before the trees completely leaf out, then going dormant underground). Both have toxic leaves (another name for both is "Lambkill") that protect them from many herbivores. Both are myrmecochorous, having their seeds dispersed by ants. Both are primarily pollinated by long-tongued bees like bumblebees, have white flowers, and very similar leaves. Both like to grow in moist, often riparian woodlands as well. They also have some differences however that are apparent, particularly when they are in flower.
Squirrel Corn is less commonly seen and tends to bloom a week or two later. Their most common name is derived from their yellow clusters of bulblets just below the soil surface. They are also called White Bleeding Hearts, and the heart-like flowers are the most obvious difference between them and Dutchman's Breeches. They also normally have only one, shorter compound leaf per flower stem.
Both these flowers are open right now, their bloom times briefly overlapping this year. Go check out their differences in person. But hurry, or you will have to wait another year before they emerge and flower again.