Perennial creeping herb, rooting at the nodes, sometimes a floating aquatic. Stems often purple-red, prostrate or ascending. Leaves narrowly lanceolate, shiny dark green. Flowers solitary in the upper leaf axils, pale yellow with a darker spot at the base of the petals. Sepals and petals 5; stamens 10. Fruit a capsule, light brown with 10 conspicuous dark brown ribs.
Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 300. (Includes a picture).
Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 90. as Ludwigia adscendens diffusa
Timberlake, J.R. & Childes, S.L. (2004). Biodiversity of the Four Corners Area: Technical Reviews Volume Two (Chapter 5-15) Appendix 5-1: Plant Checklist Occasional Publications in Biodiversity 15 Page 221. also as Ludwigia adscendens diffusa