Black Mustard

Black Mustard on shingle, Chesil beach, Dorset

Flowerheads on branched stems

Yellow petals, stamens, stigma and linear sepals

Half-spreading sepals, pods

Appressed seed pods on tall branches

Seed pods on shrubby, matted plants

Seed pods, short beaks and stems

Guitar-shaped lower leaf

Wavy middle and lanceolate upper leaves