Barbarea vulgaris
- Photograph, systematic position, morphology, biology, distribution, ecology and economic significance of Garden Yellow Rocket.
- http://www.agroatlas.spb.ru/weeds/Barbarea_vulgaris_en.htm

Barbarea intermedia
- Several photographs of Early Wintercress and the plant’s identifying features.
- http://www.plant-identification.co.uk/skye/cruciferae/barbarea-intermedia.htm