Rhynchospora rugosa
Rhynchospora rugosa, known by the common name of claybank beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, native to Central and South America.
Four subdivisions are accepted.
- Rhynchospora rugosa subsp. americana – southeastern Mexico, Central America, and Andean and southern South America
- Rhynchospora rugosa subsp. lavarum – Hawaiian Islands
- Rhynchospora rugosa f. ponapensis – Caroline Islands
- Rhynchospora rugosa subsp. rugosa – Central Mexico to Central America, the Caribbean, and tropical South America