Bacopa caroliniana, or Lemon Bacopa, is a hardy, aromatic aquatic perennial known for its bright green, fleshy, rounded leaves and upright growth, thriving in wet soils or aquariums where it adds texture and can develop reddish hues under high light. Native to the Southeastern U.S., it's easy to grow, propagates readily from cuttings, and produces small blue/purple flowers, making it a popular choice for aquascaping and water gardens.