Which genera are the largest in the Cyperaceae family?

The Cyperaceae family, which contains approximately 5,000 species, features six primary genera that account for nearly three-quarters of its total species diversity. These largest genera are:

• Carex (sedges): The largest genus in the family, containing about 2,000 species and distributed globally except in desert or semidesert regions.1
• Cyperus: Comprising nearly 650 species, primarily found in warm temperate or tropical regions.1
• Rhynchospora (beak rushes): Containing roughly 250 species.1
• Fimbristylis: Featuring about 200 species.1
• Eleocharis (spike rushes): Including about 200 species, with a distribution that extends into cold temperate and Arctic regions, though most are found in warmer areas.1
• Scleria (nut rushes): Comprising about 200 species.1

Other notable large genera include Bulbostylis and Schoenus, each with approximately 100 species, and Mapania, which contains up to 80 species. Most remaining genera in the family are significantly smaller, typically containing fewer than 30 species.1