1. Sepals (2.5-) 3-4 mm long; petals 5-7.5 mm long; stem ± soft at base (plant annual or perennial), with most or all leaves in a basal rosette; leaves usually lyrate, sinuate-dentate, or sparsely toothed.
1. Sepals (4-) 5-7.5 mm long; petals 6.5-9.5 (-10.5) mm long; stem hard and woody at base (perennial), leafy to the inflorescence, without a basal rosette; leaves all deeply pinnatifid.
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 16, 2025
https://mifloradev.lsa.umich.edu/flora-demo/#/genus/Diplotaxis