Shirley Gale Cross

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 (Guagl.) Govaerts – southeastern Mexico, Central America, and Andean and southern South America Rhynchospora rugosa subsp. lavarum (Gaudich.) T.Koyama – Hawaiian Islands Rhynchospora rugosa f. ponapensis (Hosok.) T.Koyama – Caroline Islands (Pohnpei) Rhynchospora rugosa subsp. rugosa – Central Mexico to Central America, the Caribbean, and tropical South

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. R. chalarocephala specimens have been observed in habitat types such as pine savannas, bogs, swamps, and oak-hickory woodlands, among other types of environment. Individuals have also occurred in disturbed areas as well, such as within roadside ditches or along hiking trails.

Rhynchospora californica is a species of sedge known by the common names California beaked-rush and California beaksedge. It is endemic to California where it is mainly distributed in the northwestern corner of the state south to the San Francisco Bay Area. It bears long, thin stems topped with dense inflorescences of dark brown flowers enfolding grainlike fruits that have white-fuzzy tubercles. It is a plant of marshes and bogs.

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