Cyperus bipartitus is a common species of sedge known by several common names, including shining flatsedge and river cyperus. The name "slender flatsedge" is also sometimes used but more properly applies to Cyperus gracilis. C. bipartitus is native to the Americas, where it is found widely distributed from north to south in wet environments, such as lakes, sandbars, and ditches. This is a small annual plant with fibrous roots and thin stems rarely exceeding about 25...