Calliandra

Calliandra is a genus of flowering plants in the pea family, Fabaceae. It is native to the tropical and subtropical regions of the Americas. The genus is characterized by its attractive, often brightly colored, powderpuff-like flowers. These flowers typically have numerous stamens that are much longer than the petals, giving them their distinctive appearance. The leaves are usually pinnately compound and can be sensitive, folding up at night or when touched.

Species within Calliandra are diverse, ranging from small shrubs to large trees. Some species are cultivated for their ornamental value, particularly in warmer climates. Common examples include Calliandra tweedii, known for its vibrant red flowers, and Calliandra haematocephala, also with red, ball-shaped blooms. These plants often attract pollinators such as hummingbirds and butterflies due to their nectar-rich flowers.

The genus name Calliandra is derived from the Greek words "kallos" meaning beauty and "andros" meaning stamen, referring to the showy stamens. Calliandra species play a role in their native ecosystems and are also used in landscaping and horticulture. They generally prefer well-drained soil and a sunny location. Some species may also be used for traditional medicinal purposes in their native regions, though this is not a widespread application.