Rhynchospora is a genus of about 400 species of sedges with a cosmopolitan distribution. The genus includes both annual and perennial species, mostly with erect 3-sided stems and 3-ranked leaves. The achenes bear a beak-like tubercule and are sometimes subtended by bristles. Many of the species are similar in vegetative appearance, and mature fruits are needed to make a positive identification.
Rhynchospora capitellata is a species of sedge known by the common names brownish beaksedge and brownish beaked-rush. It is native to eastern North America and a few spots in the western United States. It grows in wet habitat, such as swamps, springtime meadows, and moist areas in forests. It is a perennial herb producing clumps of stems 20 to 100 centimeters tall, each stem sheathed with several narrow, pointed leaves. The inflorescence is a cluster of brown spikelets each about 3 or 4 millimeters long.
Rhynchospora capillacea is a species of sedge known by the common names needle beaksedge, slender beakrush and needle beakrush. It is native to eastern North America from Labrador to Alberta, and south to Texas. It grows in wet, usually calcareous habitat, such as fens, sandy or stony shores, interdunal flats, and wet meadows It is a perennial herb producing clumps of stems 10 to 40 centimeters tall, each stem with very narrow, filiform leaves. The inflorescence consists of few (1-4) narrow brown spikelets each about 6 or 7 millimeters long.
Rhynchospora inexpansa, commonly called nodding beaksedge, is a species of flowering plant in the sedge family (Cyperaceae). It is native to North America, where it is found in the southeastern United States and West Indies. Its typical natural habitat is in moist meadows, flatwoods, and pond edges. It is a weedy species that responds positively to ecological disturbance.
Rhynchospora caduca, commonly called anglestem beaksedge, is a species of flowering plant in the sedge family (Cyperaceae). It is native to North America, where it is found in the southeastern United States. Its typical natural habitat is in low, wet areas, such as in marshes, seeps, tidal swamps, pine savannas, and flatwoods.
Rhynchospora megalocarpa, commonly called sandyfield beaksedge, is a species of flowering plant in the sedge family (Cyperaceae). It is native to North America, where it is found in the southeastern United States.
Rhynchospora tracyi, known by the common name of Tracy's beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, native to the Southeastern United States, the Bahamas, Cuba, Belize, and Honduras.
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.
Rhynchospora holoschoenoides, known by the common name of fly beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found throughout the Caribbean, Central and South America and western and southern Africa.
Rhynchospora cephalantha, known by the common name of bunched beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found throughout the eastern United States, from New York to Texas.
Rhynchospora baldwinii, known by the common name of Baldwin's beaksedge, is a member of the sedge family, Cyperaceae. It is found in riverbanks and swampland near the coasts of the southeastern United States, as far west as New Orleans and as far north as Morehead City in North Carolina.
Rhynchospora careyana, known by the common name of broadfruit horned beaksedge, is a member of the sedge family, Cyperaceae. It is found in marshy areas near the Gulf coast of the southeastern United States, from western Louisiana to southeastern Georgia.
Rhynchospora chalarocephala, known by the common name of loosehead beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found throughout the southeastern and Mid-Atlantic United States, from New Jersey to Texas.
Rhynchospora chapmanii, known by the common name of Chapman's beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found in wetlands of the southeastern United States from North Carolina to Louisiana, as well as in Belize, Cuba, Honduras, and Nicaragua.
Rhynchospora berteroi, known by the common name of little beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, native to wetlands in the Caribbean islands and Belize, and also found in the southeastern United States.
Rhynchospora biflora, known by the common name of twoflower beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found in rainforests of the Caribbean, Colombia, and Venezuela, as well as southeastern Brazil.
Rhynchospora brachychaeta, known by the common name of West Indian beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found in wetlands of the southeastern United States, the Caribbean, Central America, and Guyana.
Rhynchospora chinensis, known by the common name of spiked beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found in wetlands of Japan, Korea, eastern China, Mainland Southeast Asia, India, Australia, and Madagascar. It was once present in Sri Lanka, where it is now locally extinct. The subspecies R. chinensis subsp. spiciformis is endemic to Hawaii.
Rhynchospora ciliaris, known by the common name of fringed beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found in wetlands of the southeastern United States, from New Orleans to Morehead City.
Rhynchospora compressa, known by the common name of flatfruit beaksedge, is a member of the sedge family, Cyperaceae. It is a perennial herb, found in wetlands of the southeastern United States, primarily along the northeastern Gulf Coast.
