Ludwigia peruviana, with the common names Peruvian primrose-willow or Peruvian water primrose, is an aquatic, sometimes deciduous species of flowering plant in the evening primrose family. It can grow to approximately 12 feet (3.7 m) in height. While native to Peru, it has been introduced in many other countries for its attractive simple yellow flowers, it is now a common weed in swampy areas around the world.
The Peruvian primrose-willow forms dense colonies along the shore, then creeps into the water where it impedes navigation, damages structures, and competes with native vegetation. This species is classified as a category I invasive species by the United States state of Florida, where it clogs numerous lakes and rivers, and as a noxious weed by the government of Australia.
- "The Plant List: A Working List of All Plant Species". Retrieved 27 April 2016.
- "Ludwigia peruviana". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 27 April 2016.
- "Ludwigia peruviana". Global Invasive Species Database. Retrieved 27 April 2016.
- "FLIP: Florida Invasive Plants: Ludwigia peruviana". Retrieved 27 April 2016.
- Spear, Kevin (29 December 2015). "Oakland Nature Preserve's boardwalk to Lake Apopka is a museum of conflict between native and exotic plants". Orlando Sentinel. Retrieved 27 April 2016.
- Parsons, William Thomas. Noxious Weeds of Australia. pp. 525–527.
Media related to Ludwigia peruviana at Wikimedia Commons
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