Ludwigia decurrens is a species of flowering plant in the evening primrose family known by the common names willow primrose and wingleaf primrose-willow. It is native to the central and eastern United States.[2]
| Ludwigia decurrens | |
|---|---|
| |
| Flowers have four to five yellow petals. | |
| |
| Alternately arranged linear leaves. | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Myrtales |
| Family: | Onagraceae |
| Genus: | Ludwigia |
| Species: | L. decurrens
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| Binomial name | |
| Ludwigia decurrens | |
This species is an annual herb that reaches up to 6 feet (1.8 m) tall, sometimes growing as a perennial by virtue of its partially woody stem.[3] It has an erect form and a winged stem that is angled.[4] The plant is glabrous.[4] The linear leaves are alternately arranged.[4] The sessile leaves are decurrent: they extend down along the stem at their bases.[4] The flower has four yellow petals.[4] The seed capsules may contain up to 1000 seeds per capsule.[5]
This plant grows in wet habitat types, often alongside Polygonum and Cyperus species.[2]
L. decurrens has become an invasive species in Africa and in Southeast Asia, where it frequently colonizes rice paddies and other wetlands.[5] Invasion in anaerobic habitats is facilitated by the aerenchyma that enable willow primrose rhizomes to float and by its capacity to spread either by seed or by vegetative propagation from broken plant fragments.[5] Exudates from this species have been shown to have allelopathic effects on Corchorus olitorius by increasing mortality of seedlings.[6]
References
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- ^ NatureServe (2022). "Ludwigia decurrens". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. Arlington, Virginia. Retrieved 22 July 2022.
- ^ a b USDA NRCS National Plant Data Team. "Ludwigia decurrens Walter". U.S. Department of Agriculture Natural Resources Conservation Service. Retrieved 22 July 2022.
- ^ "Wingleaf Primrose-willow, Wingstem Water Primrose, Willow Primrose, Upright Primrose-willow - Ludwigia decurrent". Wildflowers of the United States. 2 March 2017. Retrieved 22 July 2022.
- ^ a b c d e Jacono, Colette. "Identification of common aquatic water-primrose species, Ludwigia, in Florida" (PDF). Center for Aquatic and Invasive Plants. University of Florida Institute of Food and Agricultural Sciences. pp. 11–13. Retrieved 22 July 2022.
- ^ a b c Kurniadie, Denny; Widianto, Ryan; Widayat, Dedi; Umiyati, Uum; Nasahi, Ceppy; Kato-Noguchi, Hisashi (2021). Christopoulou, A.; Bazos, I.; Zikos, A.; Beckie, H. J. (eds.). "Herbicide-Resistant Invasive Plant Species Ludwigia decurrens Walter". Plants. 10 (9). doi:10.3390/plants10091973. PMC 8469676.
- ^ Sakpere, Ayobola Moninuola; Oziegbe, Matthew; Bilesanmi, Idowu Arinola (2010). "Allelopathic effects of Ludwigia decurrens and L. adscendens subsp. diffusa on germination, seedling growth and yield of Corchorus olitorious L." Notulae Scientia Biologicae. 2 (2): 75–80. doi:10.15835/nsb224629.
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