Eleocharis tricostata

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Eleocharis tricostata
Eleocharis obtusa obtusa ahaines GB.jpg
Photo by © Arthur Haines, New England Wild Flower Society
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Moncots
Order: Poales
Family: Cyperaceae
Genus: Eleocharis
Species: E. tricostata
Binomial name
Eleocharis tricostata
Natural range of Eleocharis tricostata from USDA NRCS Plants Database.

Common names: three-angle spikerush[1][2]

Taxonomic Notes

Synonyms: Scirpus tricostatus (Torrey) Kuntze, Trichophyllum ticostatum (Torrey) House[3]


Eleocharis tricostata is a perennial, monoecious, graminoid sedge.[2]


This sedge ranges from Massachusetts to Florida with sporadic occurrences inland in Michigan[4] and Louisiana.[2]



E. tricostata is an obligate wetland species[2] found in wet pine savannas, bogs,[1] cypress gum swamps, marshes, swales, flatwoods,[5] wet soil of pond margins, and infrequently in saline marshes.[4] Occurrences in such areas show the plants preference for sandy, peaty, and mucky soils.[5]


It flowers and fruits between July and September.[1]

Conservation and Management

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 Weakley A. S.(2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC: University of North Carolina Herbarium.
  2. 2.0 2.1 2.2 2.3 USDA, NRCS. (2016). The PLANTS Database (http://plants.usda.gov, 5 December 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.
  3. Wunderlin R. P., Hansen B. F., Franck A. R. and Essig. F. B. (2017). Atlas of Florida Plants (http://florida.plantatlas.usf.edu/).[S. M. Landry and K. N. Campbell (application development), USF Water Institute.] Institute for Systematic Botany, University of South Florida, Tampa.
  4. 4.0 4.1 Ward D. B. and Leigh E. M. (1975). Contributions to the Flora of Florida: 8, Eleocharis (Cyperaceae). Castanea 40(1):16-36.
  5. 5.0 5.1 NatureServe. (2017). NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed: December 6, 2017 ).