[2] It is native to South America, but it can be found on most continents as an introduced species.

It grows easily in many habitat types, including disturbed areas such as roadsides.

It is an annual herb with variously shaped stems up to about 60 centimeters long, branching and growing upright to flat along the ground.

The oblong, glandular leaves are up to 2 centimeters long and have several lobes along each side.

Each is a dense cluster of tiny flowers enclosing the developing fruit.