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| Panicum | |
|---|---|
| Name | Panicum |
| Taxon | Panicum |
| Subdivision ranks | Species |
Panicum is a genus of grasses historically recognized in the family Poaceae with species widely studied in botany, agriculture, and ecology. The genus has been treated in floras and monographs across regions such as North America, South America, Africa, Asia, and Australia, and appears in inventories compiled by institutions like the Royal Botanic Gardens, Kew, the United States Department of Agriculture, and the Botanical Society of America. Researchers in programs at the Smithsonian Institution, the Royal Society, and universities including Harvard University, University of California, Berkeley, University of Oxford, and University of Tokyo have contributed to its circumscription and revision.
Taxonomic treatment of Panicum has been influenced by historical works such as those of Carl Linnaeus, later revisions in the tradition of George Bentham and August Grisebach, and molecular studies from research groups at Kew Gardens, Royal Botanic Gardens, Kew, Missouri Botanical Garden, and the Max Planck Society. Many species were reassigned following phylogenetic analyses published in journals like Taxon, American Journal of Botany, New Phytologist, and Molecular Phylogenetics and Evolution. Type designations and nomenclatural decisions have been adjudicated according to codes administered by the International Association for Plant Taxonomy and discussed at congresses such as the International Botanical Congress. Databases maintained by the International Plant Names Index, the Catalogue of Life, and the Global Biodiversity Information Facility record synonymies and author citations.
Morphological descriptions appear in regional floras including the Flora of North America, the Flora of China, and the Flora Europaea, and have been illustrated in plates used by museums such as the Natural History Museum, London. Diagnostic characters include inflorescence architecture, spikelet structure, glume morphology, and lemma awn presence; these are scored in comparative studies appearing in the Journal of Ecology and the Annals of Botany. Anatomical work from laboratories at University of Cambridge and Columbia University uses microscopy techniques developed in collaboration with equipment from ZEISS and Leica Microsystems to examine vascular bundle arrangement and epidermal patterns. Morphometric analyses often employ software from the R Project for Statistical Computing and computational methods promoted at conferences like the Society for Industrial and Applied Mathematics meetings.
Species attributed to this genus occur in mosaics of biomes mapped by organizations such as the International Union for Conservation of Nature and the United Nations Environment Programme. Occurrence records from the Global Biodiversity Information Facility, herbarium specimens at the United States National Herbarium, and surveys by the Missouri Botanical Garden indicate presence in temperate grasslands like the Great Plains (United States), tropical savannas such as the Cerrado, wetlands studied under programs by the Ramsar Convention, and disturbed sites cataloged by the European Environment Agency. Regional conservation status assessments reference lists compiled by the IUCN Red List, national agencies including the Australian Department of Agriculture, Fisheries and Forestry and the Brazilian Institute of Environment and Renewable Natural Resources.
Ecological interactions have been documented in field studies conducted by teams from Cairns Botanical Gardens, the Smithsonian Tropical Research Institute, and universities like University of California, Davis and Colorado State University. Species can function as dominant components in communities investigated in projects funded by agencies such as the National Science Foundation and the European Commission. Pollination biology, seed dispersal, and germination ecology are addressed in articles in Ecology Letters and Functional Ecology; herbivore relations reference work on grazers including Bison bison, livestock breeds recorded by the Food and Agriculture Organization, and insect herbivores documented by the Entomological Society of America. Responses to fire and drought are studied in programs led by the US Geological Survey and the Australian CSIRO.
Several species have agronomic value and are mentioned in reports by the Food and Agriculture Organization of the United Nations, extension services at Iowa State University, University of Nebraska–Lincoln, and commodity boards such as the International Maize and Wheat Improvement Center. Uses include forage production, erosion control projects run by the Natural Resources Conservation Service, and minor cereal roles in regions covered by the World Bank development projects. Ethnobotanical records in catalogues from the Smithsonian Institution and the Royal Botanic Gardens, Kew document traditional uses by indigenous groups referenced in studies from University of Hawaii and Australian National University. Economic analyses have been published in outlets like the Journal of Agricultural Economics.
Agronomic management practices are disseminated through extension publications by institutions such as the United States Department of Agriculture, Clemson University, and University of Florida. Seed certification and cultivar release involve agencies like the U.S. National Plant Germplasm System and plant breeders affiliated with the International Treaty on Plant Genetic Resources for Food and Agriculture. Integrated pest management recommendations reference guidelines from the Environmental Protection Agency and regional plant protection organizations such as the European and Mediterranean Plant Protection Organization. Restoration projects implementing Panicum taxa have been coordinated by conservation NGOs including The Nature Conservancy and governmental programs like the U.S. Fish and Wildlife Service.
Estimates of species diversity have varied among checklists produced by Kew Gardens, the International Plant Names Index, and national floras for China, Brazil, and Australia. Ongoing classification challenges stem from cryptic taxa revealed by molecular markers used in studies at institutions like Harvard University Herbaria and the Royal Botanic Gardens, Kew, hybridization recorded in fieldwork by researchers at University of Wisconsin–Madison and the University of São Paulo, and conflicting circumscriptions presented at symposia hosted by the International Botanical Congress. Conservation priorities are discussed in frameworks advanced by the IUCN Red List and integrated into policy by agencies such as the Convention on Biological Diversity.
Category:Poaceae genera