Edible
Scientific Name Capsella bursa-pastoris - Family Brassicaceae (mustards)

Description
Shepherds' purse is a many-stemmed annual with heart-shaped or triangular seed pods. Flowers many, along upper part of stems and their branches, minute, with 4 white, rounded petals. Blooms March–November. Basal leaves form a rosette and are deeply lobed, similar to dandelion but much smaller, to 4 inches long; stem leaves small, lance-shaped. Fruit 2-lobed, heart-shaped or triangular, formed lower on the stem while flowering continues above

The itty bitty, white flowers are about 1/8" or 3 mm (or smaller) in size.