| Author | L. | |
| Distribution | Throughout the Coastal Plain, scattered in the Piedmont and west to Polk County.
Native of South America; in N.A. southern Canada and the U.S., except absent from a broad middle area. | |
| Abundance | Frequent to common in the Coastal Plain, rare to uncommon in the Piedmont, rare on the Outer Banks. | |
| Habitat | Fields, cropfields, barnyards, edges of rivers, disturbed soils, railroad margins. | |
| Phenology | Flowering and fruiting March-July. | |
| Identification | Swine-cress is distinguished by its 1-2 times pinnatisect leaves and its pods, which are composed of 2 kidney-shaped halves that have a rugose surface. Other Lepidium species have circular-shaped pods that are flattened on opposite sides (like a coin). In addition, this species has a sprawling or slightly ascending stem, as opposed to erect in others. | |
| Taxonomic Comments | This species is often named as Coronopus didymus in RAB (1968) and in many other references. The logic of including this species with Lepidium seems fuzzy.
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| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | GNR | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
