Barbarea vulgaris 
R. Br. 
Winter Cress
 
 
Description:
 
  - Dark green 
  oblong basal leaves
 
  - Lowest 
  leaves 1-4 lobes at base, upper leaves without lobes
 
  - Bright 
  yellow flowers near top of plant
 
  - Flowers 
  have four petals forming a cross-6 stamens
 
 
 
Habitat:
 
  - Orchards
 
  - Alluvial 
  soils
 
  - Along 
  rivers
 
 
 
Distribution:
 
·       
Hayfields