Floral bracts ovate, or lanceolate, or obovate. Callus not differentiated. Nectaries in bisexual flowers absent. Styles thick and short, or slender, not extending beyond the beak, or slender, extending beyond the beak, or long and thick. Fruit surrounded by a perigynium, or not surrounded by a perigynium.
Legume valves straight.
Styles style may persist until dehiscence but is not modified. Represented in the Canadian Arctic Archipelago by 5 genera, Carex , Eleocharis , Eliophorum , Kobresia , and Trichophorum . Species in world 1500, genera in world 120. Dahlgren's Superorder Commeliniflorae, Order Cyperales. 6th November 2000.