Ammannia senegalensis, also known as copper leaf ammania, is a flowering plant native to western Senegal, often growing as a weed in rice paddies. Stem opposite leaves, starting out green and rather broad, later they become more narrow and reddish in colour. The leaves become more red under intense light. There are several forms available differing in leaf shape and colour of unknown status. The flowers are inconspicuous growing from the leaf axils of emerse plants.