|Etymology||Genus||After Christian Gottlieb Ludwig, 18th century professor of natural history and medicine|
|Species||Having leaves resembling Hyssop|
|Synonyms||Fissendocarpa linifolia (Vahl) Bennet, Jussiaea hyssopifolia G.Don, Jussiaea weddellii Micheli|
|Common Names||Water Primrose, Narrow-Leaved Malayan Willow-Herb|
|Native Distribution||Africa, China, Tropical Asia, Australia, Mexico, Southern America|
Ludwigia hyssopifolia is a herb that is usually found in waterlogged areas like within drains. The lance-shape leaves are glossy with prominent secondary veins. The yellow flowers are 4-petaled with pointed ends. It can be differentiated from another relative, Ludwigia octovalvis with the latter's petals having rounded ends, with longer and narrower leaf blades.
Extracts of the Water Primrose was found to have anti-tumour, antibacterial and anti-diarrhoeal properties (Banibrata, 2007; Mohammad et al., 2003). The plant is said to be dispersed by flowing water through its buoyant seeds (CABI, n.d.).
A Water Primrose growing at a monsoon drain.
Banibrata Das, Juthika Kundu, Bachar SC, Uddin MA & Kundu JK (2007) Antitumor and antibacterial activity of ethylacetate extract of Ludwigia hyssopifolia Linn and its active principle piperine. Pakistan Journal of Pharmaceutical Sciences, 20(2):128-131.
CABI (n.d.). Ludwigia hyssopifolia (water primrose). Invasive Species Compendium, Centre for Agriculture and Bioscience International. https://www.cabi.org/ISC. Accessed on 27-Nov-2018.
Mohammad Shaphiullah, Bachar SC, Kundu JK, Farida Begum, Uddin MA, Roy SC & Khan MTH (2003) Antidiarrheal activity of the methanol extract of Ludwigia hyssopifolia Linn. Pakistan Journal of Pharmaceutical Sciences, 16(1): 7-11.