Eleocharis geniculata ?

Eleocharis geniculata (L.) Roem. & Schult., Syst. Veg. 2: 150 1817. (syn: Bulbostylis capitata (L.) Steven, comb. not made.; Bulbostylis geniculatus (L.) Steven, comb. not made.; Chlorocharis capitata (L.) Rikli ; Chlorocharis geniculata (L.) Rikli; Cyperus capitatus (L.) Burm.f. ex B.D.Jacks., not validly publ.; Eleocharis brizantha Steud.; Eleocharis capitata (L.) R.Br.; Eleocharis capitata var. dispar (E.J.Hill) Fernald; Eleocharis capitata var. typica Svenson, not validly publ.; Eleocharis caribaea (Rottb.) S.F.Blake; Eleocharis caribaea var. achlamydea Zavaro & Pabón; Eleocharis caribaea var. dispar (E.J.Hill) S.F.Blake; Eleocharis densisquamata Steud.; Eleocharis dispar E.J.Hill; Eleocharis geniculata f. brunnea S.González & Reznicek; Eleocharis geniculata var. minor (Vahl) Roem. & Schult.; Eleocharis melanosperma Steud.; Eleocharis mexicana Peyr.; Eleocharis riparia Nees ex Spreng.; Eleocharis setacea R.Br.; Eleocharis singularis Steud.; Eleocharis sintenisii Boeckeler; Eleocharis valida Boeckeler; Eleogenus capitatus (L.) Nees; Eleogenus capitatus var. intermedius Nees; Eleogenus capitatus var. major Nees; Eleogenus capitatus var. minor Nees; Eleogenus capitatus var. recurvus Nees; Limnochloa constricta (Schrad. ex Kunth) Nees; Limnochloa densa Liebm.; Limnochloa geniculata (L.) Nees; Megadenus capitatus (L.) Raf.; Scirpus atrofactus Steud.; Scirpus brownii Spreng.; Scirpus capitatus L.; Scirpus caribaeus Rottb.; Scirpus constrictus Schrad. ex Kunth; Scirpus depressus Vell.; Scirpus geniculatus L.; Scirpus geniculatus var. minor Vahl; Scirpus interstinctus Poepp. ex C.Presl; Scirpus repens Willd.; Scirpus validus (Boeckeler) Kuntze, nom. illeg.; Trichophyllum capitatum (L.) House);
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Tropical & Subtropical to N. America: Afghanistan, Alabama, Andaman Is., Arizona, Aruba, Bahamas, Bangladesh, Belize, Benin, Bermuda, Bolivia, Borneo, Botswana, Brazil North, Brazil Northeast, Brazil West-Central, Burkina, California, Cameroon, Cape Provinces, Caroline Is., Cayman Is., Central American Pac, Chad, Chagos Archipelago, China Southeast, Christmas I., Cocos (Keeling) Is., Colombia, Congo, Cook Is., Costa Rica, Cuba, Djibouti, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Florida, French Guiana, Gabon, Gambia, Georgia, Ghana, Gilbert Is., Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Gulf States, Guyana, Hainan, Haiti, Honduras, Illinois, India, Indiana, Iran, Iraq, Ivory Coast, Jamaica, Jawa, Kenya, KwaZulu-Natal, Lebanon-Syria, Leeward Is., Lesser Sunda Is., Liberia, Libya, Louisiana, Madagascar, Malaya, Maluku, Marianas, Mauritania, Mauritius, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Mozambique, Myanmar, Nansei-shoto, Nebraska, Netherlands Antilles, Nevada, New Jersey, New Mexico, New South Wales, Nicaragua, Nicobar Is., Niger, Nigeria, Norfolk Is., Northern Provinces, Northern Territory, Ohio, Oklahoma, Oman, Ontario, Pakistan, Panamá, Pennsylvania, Peru, Philippines, Puerto Rico, Queensland, Réunion, Samoa, Saudi Arabia, Senegal, Sierra Leone, Society Is., Socotra, Somalia, South Australia, Sri Lanka, Sulawesi, Sumatera, Suriname, Taiwan, Tanzania, Tasmania, Texas, Thailand, Tokelau-Manihiki, Trinidad-Tobago, Turks-Caicos Is., Uganda, Venezuela, Venezuelan Antilles, Victoria, Vietnam, Wallis-Futuna Is., Western Australia, Windward Is., Yemen, Zambia, Zaïre, Zimbabwe as per POWO;
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