Dithyrea

Dithyrea (shieldpod) is a small genus of flowering plants in the family Brassicaceae containing only one or two species. The California shieldpod or spectacle-pod, "Dithyrea californica", is an abundant and unique-looking herb native to the southwestern United States and northern Mexico. The beach shieldpod, "Dithyrea maritima", a rare plant found only on the coast of California and Baja California, is sometimes considered a subspecies of "D. californica".