Shepherd's-purse
Capsella bursa-pastoris

Description
Annual or hardy-annual (facultative biennial), seed-propagated weed with many forms and spindle-shaped root.

Characteristic Features
Young plant rosulate with white flowers. Heart-shaped flat and triangular fruit (shepard's purse).

Cotyledons
Oblong-oval, very small, short-petiolate, prostrate.

Stems
Erect, simple or projectingly ramified, up to 50 cm (19.68 inch) high.

Leaves
Initially orbicular or spoon-shaped, first leaf usually entire; following leaves oblong, dentate or sinuately lobed to deeply incised, all petiolate.
Stalk leaves lanceolate, often undivided, sagittate sessile.