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CommentsCreeping Water Primrose has showy flowers and attractive foliage. Unfortunately, it is sometimes too aggressive for its own good. It can be distinguished from other Ludwigia spp. by its larger 5-petaled flowers and sprawling semi-aquatic habit. Across its range in the United States and tropical America, different varieties of this species have been described, although only var. glabrescens has been found in Illinois. This variety can be distinguished by its more glabrous foliage. Another scientific name of this wetland plant is Jussiaea repens glabrescens, while an alternative common name is Creeping Primrose Willow.