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| Paspalum dilatatum | |
|---|---|
| Genus | Paspalum |
| Species | dilatatum |
| Authority | Poir. |
Paspalum dilatatum is a warm-season perennial grass known for its coarse tufted habit and racemose inflorescences. Native to parts of South America, it has become naturalized in many regions and is notable in contexts ranging from agriculture to invasive species management. The species is referenced in floras and forage literature associated with institutions such as the Royal Botanic Gardens, Kew and the United States Department of Agriculture.
The taxonomic placement of this species sits within the genus Paspalum in the family Poaceae, with the author citation attributed to Jean Louis Marie Poiret, connecting to historical botanical work at institutions like the Muséum national d'Histoire naturelle, Paris. Synonymy and nomenclatural treatments appear in regional checklists compiled by organizations such as the Royal Botanic Gardens, Kew and national herbaria including the Missouri Botanical Garden and the Natural History Museum, London. Classification discussions intersect with phylogenetic studies published through journals affiliated with societies like the Botanical Society of America and the International Association for Plant Taxonomy.
Morphologically, the species produces coarse, tufted culms and broad leaf blades, characteristics documented in floras from regions such as the United Kingdom flora compendia and the Flora of North America. The inflorescence typically forms racemes; detailed morphological comparisons occur in taxonomic treatments associated with the Royal Society and botanical monographs archived by the Smithsonian Institution. Vegetative and reproductive traits are described in agronomy manuals used by the Food and Agriculture Organization and extension services like those of the University of California and the Queensland Department of Agriculture and Fisheries.
Originally described from Argentina and Uruguay, the species has naturalized across continents, with records in Australia, New Zealand, parts of North America, and temperate regions of Europe. Occurrence data are compiled by biodiversity platforms such as the Global Biodiversity Information Facility and national agencies including the United States Department of Agriculture and the Australian Plant Census. Typical habitats include pasturelands, disturbed sites along transport corridors documented by municipal authorities like the City of Sydney and coastal dune systems studied by conservation organizations such as the IUCN.
The species follows a warm-season growth pattern with seasonal tillering and seed production, ecological traits investigated in studies affiliated with universities such as the University of Florida and the University of São Paulo. Pollination biology, seed dispersal, and dormancy are subjects of research published in journals supported by entities like the Ecological Society of America and the American Society of Agronomy. Its interactions with mycorrhizal fungi and endophytes have been examined in laboratories associated with the Royal Botanic Gardens, Kew and the National Institutes of Health-funded research programs.
Used locally as forage and grazing resource, the species features in agricultural guides produced by the Food and Agriculture Organization and extension services from institutions such as the University of Queensland and the University of California Cooperative Extension. Its contribution to livestock nutrition is discussed in materials from the World Bank and agribusiness publications linked to corporations like Cargill and Syngenta that address pasture management. Conversely, its status as a weed in cropping systems has prompted inclusion in invasive species lists curated by the European Commission and the United States Geological Survey.
Management strategies combine cultural, mechanical, and chemical approaches promoted by extension services at institutions such as the University of California and the Queensland Department of Agriculture and Fisheries. Chemical control options are described in guidance from regulatory agencies including the Environmental Protection Agency and the Australian Pesticides and Veterinary Medicines Authority. Integrated weed management plans reference frameworks developed by the Food and Agriculture Organization and research from the Commonwealth Scientific and Industrial Research Organisation.
Selective breeding for improved forage traits and tolerance to grazing has been pursued by agricultural research centers including the Commonwealth Scientific and Industrial Research Organisation and university programs at the University of Florida and the University of Queensland. Cultivation recommendations appear in manuals issued by the Food and Agriculture Organization and national departments such as the United States Department of Agriculture and the New South Wales Department of Primary Industries. Seed certification and cultivar registration processes are administered by bodies like the International Seed Testing Association and national seed authorities such as the Australian Seed Federation.