Key to Wisconsin Barbarea

Author: John G. Zaborsky

• 1a.Fruiting pedicels as thick as the mature fruits B. verna

• 1b.Fruiting pedicels thinner than the fruits 2

• 2a.Styles (1¬–) 1.5¬–3 (¬–3.5) mm long; auricles of cauline leaves glabrous B. vulgaris

• 2b.Styles 0.2¬–1.5 (¬–2) mm long auricles of cauline leaves usually sparsely pubescent 3

• 3a.Fruits 1.2–3 cm long; ovules 16–28 per ovary; petals 2.5–4.5 mm long; cauline leaf blade margins dentate B. stricta

• 3b.Fruits 2.5–4.5 cm long; ovules 24–36 per ovary; petals 5–8 mm long; cauline leaf blade margins incised or pinnatifid B. orthoceras