Seedling of Sahara mustard, Brassica tournefortii, showing purple color of underside.

Small plant with heart-shaped, tiny, purple leaves, held between two fingers. Palm Springs, CA, Riverside Co. Credit: Christopher McDonald, UCCE Riverside County
Seedling of Sahara mustard, Brassica tournefortii, showing purple color of underside. Credit: Christopher McDonald, UCCE Riverside County