Plant
Identification
Water Primrose
 Description Management
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Photos
Ludwigia
spp.
Water primrose is a perennial plant that stands erect along the shoreline but also forms long runners (up to 16 feet) that creep across wet soil or float out across the water surface. These runners form roots at their nodes. Leaves range from lance-shaped or willow-like (2 to inches long by 1/2 to 1 inch wide) on the erect stems to round or oval 91 to 2 inches in diameter on the floating stems. Leaves can be green to reddish depending on the species. The single flowers are yellow with 4 or 5 petals depending on the species. Flowers vary in size from 1 inch to 2 inches in diameter.
Submerged portions of
all aquatic plants provide habitats for many micro and macro
invertebrates. These invertebrates in turn are used as food by
fish and other wildlife species (e.g. amphibians, reptiles, ducks,
etc). After aquatic plants die, their decomposition by bacteria
and fungi provides food (called "detritus") for many aquatic invertebrates. Ducks and other waterfowl will consume the seeds of water primrose.
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" indicates Non-Native plants.