Rudbeckiaceae

Rudbeckiaceae is a family of flowering plants in the order Asterales. This family is commonly known as the sunflower family or the daisy family. It is a large and diverse family, containing over 28,000 described species, with more still being discovered. The Rudbeckiaceae are found on every continent except Antarctica. They exhibit a wide range of growth habits, from small herbaceous annuals to large trees. Many members of the Rudbeckiaceae are economically important, providing food sources, medicinal compounds, and ornamental plants. Examples include sunflowers (Helianthus annuus), daisies (Bellis perennis), and dandelions (Taraxacum officinale). The characteristic flower head, often called a capitulum or pseudanthium, is a defining feature of this family. This structure is composed of numerous small flowers (florets) that collectively resemble a single flower. These florets are typically arranged in a dense head, often surrounded by specialized leaf-like structures called bracts. The family is divided into several subfamilies, tribes, and genera, reflecting evolutionary relationships. Research into the genetics and evolution of Rudbeckiaceae continues to provide insights into plant diversity and adaptation.