Bacopa crenata, the waterhyssop, brahmi, or moneywort, is a perennial or annual medicinal herb indigenous to tropical Africa and Madagascar.

Its leaves are opposite, oblong, slightly serrated on their margin, and 1.4–1.5 cm (0.55–0.59 in) thick.

Its flowers are small, actinomorphic, and range from white to blue or purple, with four to five petals.

[2] Bacopa crenata grows in marshy areas throughout West Africa, Angola, Madagascar, Kenya, and Tanzania.

[3] The leaves of Bacopa crenata are used in Africa to treat conjunctivitus and headaches, and to heal wounds.