Brassicaceae, the mustard family.
Plant: Erect, occasionally branching, plant, 4"-16", with slightly hairy leaves and a terminal cluster of small, white flowers at the top of a stem bearing small, triangular seed-pods on slender stalks. Annual.
Flowers: White, small, about 1/8", with four petals and four sepals, on a raceme. The flowers are usually in a tight cluster at the end of the raceme, which elongates as the fruit matures.
Leaves: Basal and alternate, lanceolate; basal leaves lobed, 2"-4" long, stem leaves smaller, generally with smooth margins, and clasping the stem. Often slightly hairy.
Fruit: Triangular capsules 1/8"-1/4" with a notch containing a small beak, on threadlike stalks, standing out from the raceme. The common name refers to the shape of the fruit.
Habitat: Fields, roadsides, waste areas.
Blooms early, then seeds and new plants may bloom through late fall.
The foliage, like that of many members of the mustard family is edible, and can be
boiled as a potherb.
Where to find it:
Scattered in lawn areas near the road before they are mowed and some other open locations.