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longleaf threeawn
Scientific Name: Aristida palustris
Family: Poaceae
Category: Monocot
Growth: Graminoid
Duration: Perennial
Other Names:
Longleaf Threeawn (Aristida palustris)
Aristida palustris, commonly known as Longleaf Threeawn, is a perennial graminoid (grass-like plant) native to the Southeastern U.S.
Taxonomy and Nomenclature
- Scientific Name: Aristida palustris (Chapm.) Vasey
- Common Name: Longleaf Threeawn
- Kingdom: Plantae
- Family: Poaceae (Grass family)
- Genus: Aristida L.
- Rank: Species
- Synonyms: The text mentions the accepted name *Aristida floridana, KEY WEST THREEAWN* and the accepted name *Aristida palustris, LONGLEAF THREEAWN*.
Distribution and Habitat
- Native to the Southeastern U.S., including Texas.
- Found in moist sites, swamps, shores, seasonal ponds, and wet pinewoods.
- Mentioned in connection with Alabama, Florida, and longleaf pine savannas along the West Gulf Coastal Plain.
Morphological Characteristics and Growth Habits
- A perennial plant, meaning it lives for more than two years.
- Graminoid (grass-like).
- Prefers a sunny location.
Ecological Role
- Often found in association with longleaf pine ecosystems.
- Component of the understory in habitats like longleaf pine sandhills.
- Mentioned in the context of fire-adapted plant communities.
Interactions with Other Organisms
- Grows with species like beaksedges (Rhynchospora microcarpa, R. cephalantha, R. tracyi, R. filifolia, etc.) and Elliott's yellow-eyed grass.
- Found alongside Ctenium aromaticum (toothache grass) and Muhlenbergia expansa in West Gulf Coastal Plain Wet Longleaf Pine Savannahs.
Further Information
- Discover Life provides a page about the biology, natural history, ecology, identification, and distribution of Aristida palustris.
- Plant database information available.
- United States Department of Agriculture data.