(Cyperus sphacelatus)
Annual with fibrous roots. Leaves few, shorter than the stems. rather rigid, flat or slightly canaliculate, gradually acuminate, scabrid in the upper half on margins and underside of midrib, 2-4 mm wide. Inflorescence simple or compound, open. Stamens 3; Asia-Tropical:, Borneo (Brunei); Malaya (Peninsular Malaysia, Singapore) Australasia:, Queensland (Queensland) Ceylon: Coromandel: Gazelle Peninsula: Jesselton: Johore: Kuching: Labuan I: McCluer Gulf: Merauke: N. Sumatra: New Britain: Nunukan: P. Penang: Tahiti: Tropical Africa: W. New Guinea: northern Borneo: tropical America: Widely distributed in tropical Africa and tropical America, elsewhere introduced (Coromandel, Ceylon, Queensland, Tahiti), in Malesia: N. Sumatra, Malay Peninsula (P. Penang, Johore, Singapore), Northern Borneo (Kuching, Jesselton, Brunei, Labuan I., Nunukan), W. New Guinea (McCluer Gulf, Merauke), New Britain (Gazelle Peninsula), obviously naturalising.