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Plant Form: Upright shrub.
Size: Up to 3 m tall.
Stem: Hairy, especially when young. Dark green to brownish-green, branched.
Leaves: Egg to oval-shaped with pointed tips, 5-10 cm long, hairy and with prominent veins.
Flowers: Bright yellow 2-4 cm across, singular in fork of upper leaves, usually 4 petals but sometimes 5 or 6. Only last a single day.
Fruit and Seeds: Reddish-brown capsule 10-25 mm long containing thousands of seeds.
Habitat: Lagoons, swamps, creeks, riverbanks.
Distinguishing Features: Distinguished from Ludwigia (Ludwigia peploides ssp. montividensis) by smaller leaf stalks, and from Long-leaved primrose willow (Ludwigia longifolia) by being hairy.