Lippia dulcis) is a species of perennial herbaceous plant that is native to southern Mexico, the Caribbean (Cuba, Hispaniola, and Puerto Rico), Central America, Colombia, and Venezuela.

[1] It is known by several common names, including Aztec sweet herb, bushy lippia, honeyherb, hierba dulce, and tzopelic-xihuitl (Nahuatl).

This plant has historically been used as a natural sweetener and medicinal herb in its native Mexico and parts of Central America.

The sweet taste is caused by a sesquiterpene compound called hernandulcin, which was discovered in 1985 and named for Francisco Hernández, the Spanish physician who first described the plant in the sixteenth century.

[2] Use of Phyla dulcis has not become widespread because it also contains high levels bitter compounds, especially camphor.