Ludwigia peruviana - (Linnaeus) Hara
Onagraceae (Evening Primrose) Family
Plant is an upright, semi-aquatic, herbaceous perennial, with creeping or floating stems that often root at the nodes. Its preferred habitat is moist ditches, swamps, shallow water ponds and wherever stagnant water is prevalent. Distribution is throughout the Escambia region.
Leaves are elongated and may be lance-shape to lance-ovate; opposite or sometimes alternate on the stem; prominent midvein; smooth; no teeth and no lobes; short and narrow leaf stalks; stems sometimes turn rose-colored or purplish.
Flowers have long tubes; stalked; shiny yellow; four to five petals; slightly cup-shaped. Flowers occur in the spring and summer.
Fruit is a capsule.