Rhynchospora schiedeana Kunth Rhynchospora schiedeana Kunth, Enum. pl. 2: 300. 1837 sec. González-Elizondo & al. 2018=Rhynchospora schiedeana subsp. varica C.B. Clarke in Contr. U. S. Natl. Herb. 10: 463. 1908 syn. sec. Diego & González 2008