|Photo by Guy Anglin, Atlas of Florida Vascular Plants|
|Division:||Magnoliophyta – Flowering plants|
|Class:||Liliopsida – Monocotyledons|
| Rhynchospora plumosa|
|Natural range of Rhynchospora plumosa from USDA NRCS Plants Database.|
Common name: Plumed beaksedge
Synonym: Rynchospora semiplumosa A. Gray
A description of Rhynchospora plumosa is provided in The Flora of North America.
R. plumosa was found in non-disturbed longleaf pine sites in the North Carolina; in contrast, the species was not found in highly disturbed sites. 
In the Coastal Plain in Florida, R. plumosa can occur in savannas, open scrub oak savannas, wiregrass savannas, pine-palmetto scrub oaks, seasonally wet depressions in open pinewoods, pine flatwoods, regularly burned pine flatwoods, slash pine-wiregrass flatwoods, exposed sandy bottoms of lakes, seepages slopes, hillside bogs, grass-sedge bogs, shrubby borders of depression marshes, sand ridges, mangrove swamps, dry pine barrens, and drying ephemeral ponds.  It can also be found in power line corridors, sandy roadsides, wet borrow pits, shrub bog clearings, pine flatwood clearings, moist roadside depressions, cut-over pinewoods, cleared palmetto scrubs, bull-dozed scrublands, boat ramps, pine plantations, and clobbered pine-wiregrass flatwoods. Soils include dry sand, moist sandy peat, loamy sand, sandy loam, and white sand. 
Associated species include Aristida stricta, Pinus palustris, Serenoa repens, Hypericum, Stillingia, Xyris, Rhexia mariana, Dichanthelium wrightianum, Scleria georgiana, Sarracenia flava, Drosera, Sarracenia, Rhynchospora elliottii, R. corniculata, R. chapmannii, R. pusilla, R. fascicularis, R. baldwinii, R. globularis, R. wrightiana, R. fernaldii, and R. ciliaris. 
Flowers and fruits April through December. 
Use by animals
The Henslow’s Sparrow (Ammodramus henslowii) does not prefer to eat the seeds. 
Conservation and management
Cultivation and restoration
References and notes
- Cohen, S., R. Braham and F. Sanchez. 2004. Seed bank viability in disturbed longleaf pine sites. Restoration Ecology 12:503-515.
- Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, Robert K. Godfrey, S. F. Blake, Robert Kral, Mabel Kral, A. F. Clewell, Robert Blaisdell, Ann F. Johnson, Sidney McDaniel, Kurt E. Blum, S.L. Orzell, Edwin L. Bridges, H. E. Grelen, P. L. Redfearn, Edward Wheeler, S. M. Tracy, N. C. Henderson, Cecil R. Slaughter, M. Minno, Austin R. Mast, O. Lakela, A. H. Curtiss, Chris Buddenhagen, Becky Bee, Annie Schmidt. States and Counties: Florida: Alachua, Bay, Bradford, Calhoun, Citrus, Collier, Dixie, Duval, Flagler, Franklin, Gulf, Hernando, Lee, Leon, Levy, Liberty, Martin, Nassau, Okaloosa, Orange, Osceola, Pasco, Pinellas, Polk, Santa Rosa, St. Johns, Sumter, Taylor, Volusia, Wakulla, Walton, Washington. Compiled by Tall Timbers Research Station and Land Conservancy.
- Glitzenstein, J. S., D. R. Streng and D. D. Wade. 2003. Fire frequency effects on longleaf pine (Pinus palustris, P.Miller) vegetation in South Carolina and northeast Florida, USA. Natural Areas Journal 23:22-37.
- DiMiceli, J. K., P. C. Stouffer, E. I. Johnson, C. Leonardi and E. B. Moser. 2007. Seed preferences of wintering Henslow's sparrows. Condor 109:595-604.