Charlock patch by the Lancaster Canal
 
 
Flowerhead
 
 
A more open flowerhead
 
 
4 petals, 6 stamens and one stigma
 
 
Spreading, linear sepals
 
 
Seed pod - stalk, valve, beak and remains of stigma
 
 
Seed pods showing valves
 
 
Leaves
 
 
Lower leaf with lateral basal lobes
 
 
Coarsly-toothed upper leaf and bristly stem