The monotypic genus Anemopsis has only one species, Anemopsis californica, with the common names yerba mansa or lizard tail.
It is a perennial herb in the lizard tail family (Saururaceae) and prefers very wet soil or shallow water.
It is native to southwestern North America in northwest Mexico and the Southwestern United States from California to Oklahoma and Texas to Kansas to Oregon.
As it matures, the visible part of the plant develops red stains, eventually turning bright red in the fall.