**Bidens Pilosa: A Versatile and Globally Distributed Plant**

**230-240 Known Species**

Bidens pilosa, commonly known as hitch hiker's black, is one of the 230 to 240 known Bidens species within the daisy family Asteraceae. This perennial herb is found in temperate regions around the world, with its origins in South America.

**Medicinal Properties**

In Brazil, Bidens pilosa is known as Picão preto and is valued for its medicinal properties. It is commonly used for treating inflammation and arterial hypertension.

**Invasive Nature**

Despite its medicinal benefits, Bidens pilosa is also a hardy weed that has become invasive in various habitats, including grasslands, heathlands, wetlands, and forest clearings.

**Distinctive Features**

The plant is characterized by small yellow and white flowers and can be easily recognized by its triangular leaves with serrate margins.

**Global Distribution**

Bidens pilosa has spread throughout the world, with a presence in Asia, Europe, Africa, and North America.