Xyris jupicai

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Common names: Richard's yelloweyed grass

Xyris jupicai
Xyris jupicia BM.JPG
Photo by John Bradford hosted at Bluemelon.com/poaceae
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Moncots
Order: Commelinales
Family: Xyridaceae
Genus: Xyris
Species: X. jupicai
Binomial name
Xyris jupicai
Natural range of Xyris jupicai from USDA NRCS Plants Database.

Taxonomic Notes

Synonyms: X. caroliniana, X. elata Chapman, X. communis Kunth.[1]


X. jupicai is a monocot forb in the Xyridaceae family that can be either an annual or perennial[2]. Individual plants are solitary or can be found in small tufts that arise from lateral offshoots. Leaves are linear, 10-60 cm. long and 5-10 mm. wide. They are described as "flat to slightly twisted, ascending, smooth to minutely tuberculate along the margins; tip acute; equitant portion gradually broadened to the slightly dilated, yellowish-preen or tan base"[3].


X. jupicai is native throughout the southeast United States, particularly widespread throughout Florida and along the southeast coast to southern New Jersey [2].



X. jupicai is wetland obligate[2] and can be found in areas with wet sands or sandy peat such as flatwoods pond margins, cypress swamps, and lake shores"[3]. It has also been found in disturbed areas such as roadsides, cleared pine flats, and farms[4]. This species grows in a range of soil types that are predominantly sandy (sandy peat, sandy clay, etc.). It can grow in dry soils, but it is typically found in wet soils such as those at lake margins[4].

Xyris jupicai is an indicator species for the Calcareous Savannas community type as described in Carr et al. (2010).[5]

Associated species- X. jupicai has been found with the following genera: Lycopodium, Drosera, Ludwigia, Scleria, Polygonum, Andropogon, Rhynchospora, Juncus, Polygala, Pontederia, Sagittaria, Psilocarya, Eriocaulon,Ilex and Eleocharis and the following species: Fimbristylis autumnalis, Fuirena scirpoidea, Eleocharis olivacea, Xyris caroliniana, X elliottii, X. fimbriata, X. longisepala, Eriocaulon lineare, Rhexia salicifolia, Rhexia virginica, Panicum verrucosum, Eragrostis refracta, Juncus abortivus, J. megacephalus, J. debilis, Lachnanthes caroliniana, Erigeron vernus, Ludwigia linearis, Hypericum fasciculatum, Ilex myrtofolia, Nyssa biflora, Turkey Oak and Loblolly pine[4].


This species typically flowers from July through September[6]. It fruits from July to mid-November[4].

Fire ecology

Populations of Xyris jupicai have been known to persist through repeated annual burning.[7]

Conservation, cultivation, and restoration

Cultural use

Photo Gallery

References and notes

  1. Weakley, A.S. 2015. Flora of the southern and mid-atlantic states. Working Draf of 21 May 2015. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
  2. 2.0 2.1 2.2 USDA Plants Database: https://plants.usda.gov/core/profile?symbol=XYJU
  3. 3.0 3.1 Kral, R. (1960). "The genus Xyris in Florida." Rhodora 62(743): 295-319.
  4. 4.0 4.1 4.2 4.3 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014. Collectors: Robert K. Godfrey, Loran C. Anderson, Wilson Baker, Ann Johnson, R.F. Doren, Steve L. Orzell, Rodie White, R. Komarek, R. Kral, A. H. Curtiss, Bruce Hansen, JoAnn Hansen, Robert L. Lazor, Edwin L. Bridges, O. Lakela, A. F. Clewell, Robt. Blaisdell, Chas. C. Deam, Gary R. Knight, Grady W. Reinert, Edwin L. Tyson, Manuel Rimachi, C. Nelson, Thomas E. Miller, Lisa Keppner, Sidney McDaniel, Kathleen Craddock Burks, David Hall, Gary Schultz, Richard D. Houk, P. L. Redfearn, J. D. Freeman, L. Dalrymple, A. B. Pittman, A. R. Darr, K. Boyle, Charles T. Bryson, Samuel B. Jones, J. Stutts, A. Gholson, W. H. Hodge, H. L. Blomquist, R. B. Channell, Hollis J. Rogers, B. C. Tharp, Fred A. Barkley, Wilbur H. Duncan, James W. Hardin, Harry E. Ahles, J. A. Duke and Cindi Stewart. States and Counties: Alabama: Barbour, Montgomery and Sumter. Arkansas: Calhoun and Union. Florida: Baker, Bay, Brevard, Calhoun, Citrus, Clay, Collier, Escambia, Franklin, Gilchrist, Gulf, Hamilton, Hernando, Highlands, Hillsborough, Holmes, Indian River, Jackson, Jefferson, Leon, Levy, Liberty, Madison, Okaloosa, Orange, Palm Beach, Pasco, Polk, Santa Rosa, Sarasota, Taylor, Wakulla and Washington. Georgia: Appling, Baker, Brooks, Charlton, Echols, Elbert, Grady and Seminole. Louisiana: Beauregard, Claiborne, Lincoln and Union. Mississippi: Greene, Lafayette and Lamar. North Carolina: Beaufort, Brunswick, Carteret, Columbus, Currituck, Dublin and Onslow. South Carolina: Bamberg. Texas: Gonzales, Marion, Polk and Robertson. Virginia: Suffolk City.
  5. Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.
  6. Weakley, A. S. (2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC, University of North Carolina Herbarium.
  7. Platt, W.J., R. Carter, G. Nelson, W. Baker, S. Hermann, J. Kane, L. Anderson, M. Smith, K. Robertson. 2021. Unpublished species list of Wade Tract old-growth longleaf pine savanna, Thomasville, Georgia.