Eriocaulaceae

The Eriocaulaceae is a family of small, tufted herbs that are flowering plants characterized by having one seed leaf. These plants typically grow in aquatic or marshy environments, primarily in tropical and subtropical regions, with a significant presence in South America. They are known for their grasslike leaves and inconspicuous flowers, which are borne in small but often showy clusters that can resemble sunflower heads. These flowers can be either male or female, or a mix of both within the same head. The family is thought to share an evolutionary origin with the spiderwort order (Commelinales). Key genera within this family include Paepalanthus, Eriocaulon, Syngonanthus, and Leiothrix.1