Eastern Gamagrass
Tripsacum dactyloides
Tripsacum dactyloides, commonly called eastern gamagrass, or Fakahatchee grass, is a warm-season, sod-forming bunch grass. It is widespread in the Western Hemisphere, native from the eastern United States to northern South America.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Tripsacum_dactyloides
Taxonomy & Classification
Kingdom
Plantae
Phylum
Tracheophyta
Class
Liliopsida
Order
Poales
Family
Poaceae
Genus
Tripsacum
Eastern Gamagrass belongs to the family Poaceae, order Poales, within the Liliopsida class.
Species Profile
Tripsacum dactyloides, commonly called eastern gamagrass, or Fakahatchee grass, is a warm-season, sod-forming bunch grass. It is widespread in the Western Hemisphere, native from the eastern United States to northern South America. Its natural habitat is in sunny moist areas, such as along watercourses and in wet prairies. In some areas, it has adapted well to disturbed conditions.
Eastern Gamagrass faces significant threats from habitat conversion of native prairies and grasslands to agricultural land and urban development. The species has experienced substantial population declines due to the widespread loss of tallgrass prairie ecosystems across its range, with remaining populations often fragmented and isolated.
Key Facts
Habitat & Distribution
Native tallgrass prairies, wet prairies, and prairie swales across the central and eastern United States, typically in areas with deep, fertile soils and adequate moisture. Also found along stream banks, in low-lying areas, and prairie margins where it can form dense stands.
Threats
Agricultural conversion and intensive farming
Habitat fragmentation
Urban and suburban development
Fire suppression altering natural prairie dynamics
Invasive species competition
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Eastern Gamagrass (Tripsacum dactyloides). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/eastern-gamagrass