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Taxon:  Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs



Summary
Genus:
Megathyrsus
Family:
Poaceae (alt. Gramineae)
Subfamily:
Panicoideae
Tribe:
Paniceae
Nomen number:
447623
Place of publication:
Austrobaileya 6:572. 2003
Verified:
01/05/2005 ARS Systematic Botanists.
Accessions:
0 (0  active, 0  available) in National Plant Germplasm System. 
Other conspecific taxa
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs var. coloratus (C. T. White) B. K. Simon & S. W. L. Jacobs (0 active accession[s])
Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs var. pubiglumis (K. Schum.) B. K. Simon & S. W. L. Jacobs (0 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Basionym
Panicum maximum Jacq.

Homotypic Synonym(s)
Urochloa maxima (Jacq.) R. D. Webster

Heterotypic Synonym(s)
Panicum hirsutissimum Steud.
Panicum maximum Jacq. var. hirsutissimum (Steud.) Oliv.
Panicum maximum Jacq. var. trichoglume Robyns
No images
Reference(s)
  1. Acevedo-Rodríguez, P. & M. T. Strong. Flora of the West Indies (on-line resource). http://botany.si.edu/Antilles/WestIndies/results.cfm
  2. Barbosa de Sousa, A. C. et al. 2011. Molecular diversity and genetic structure of Guineagrass (Panicum maximum Jacq.), a tropical pasture grass. Trop. Pl. Biol. 4:185-202. Note: = Panicum maximum Jacq.
  3. Forzza, R. C. et al., coord. Lista de espécies da flora do Brasil (on-line resource). http://floradobrasil.jbrj.gov.br/2010/
  4. Giraldo-Cañas, D. 2011. Catálogo de la familia Poaceae en Colombia. Darwiniana 49:139-247.
  5. Howell, C. J. & J. W. D. Sawyer. New Zealand naturalised vascular plant checklist. 2006 Note: = Panicum maximum Jacq.
  6. Instituto de Botánica Darwinion. Flora del Conosur. Catálogo de las plantas vasculares. 2008 Note: recognizes vars. maximus and pubiglumis
  7. International Seed Testing Association. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2. 1982
  8. Kabelo, M. & D. Mafokate. 2004. A checklist of Botswana grasses. S. African Bot. Diversity Network Rep. 24:1-16. Note: = Panicum maximum Jacq.
  9. Randall, R. P. The introduced flora of Australia and its weed status. 2007 http://www.weeds.org.au/docs/intro_flora_australia.pdf
  10. Rehm, S. Multilingual dictionary of agronomic plants. 1994 Note: = Panicum maximum Jacq.
  11. Tovar, Ó. 1993. Las gramíneas (Poaceae) del Perú. Ruizia 13:322. Note: = Panicum maximum Jacq.
  12. Villaseñor, J. L. & F. J. Espinoza-Garcia. 2004. The alien flowering plants of Mexico. Diversity & Distrib. 10:113-123. Note: = Panicum maximum Jacq.
  13. Wagner, W. L. et al. Flora of the Hawaiian Islands (on-line resource). Note: = Urochloa maxima (Jacq.) R. D. Webster
  14. Wu Zheng-yi & P. H. Raven et al., eds. Flora of China (English edition). 1994- Note: = Panicum maximum Jacq.
  15. Wunderlin, R. & B. Hansen. Atlas of Florida vascular plants (on-line resource). Note: = Panicum maximum Jacq.
  16. Catalogue of New World grasses (Poaceae) (on-line resource). http://www.tropicos.org/NameSearch.aspx?projectid=10
  17. Plants of southern Africa: an online checklist. Note: = Panicum maximum Jacq.
Common names
English
green panic grass –
Guinea grass –
French
herbe de Guinée –
German
Guineagras –
Italian
erba della Guinea –
Portuguese (Brazil)
capim-colonião –
Spanish
mijo de Guinea –
pasto Guinea –
Swedish
guineagräs –
Distribution
order_codeStatusContinentSubcontinentCountryStateNote
1NativeAfricaEast Tropical AfricaKenya  
1NativeAfricaEast Tropical AfricaTanzania  
1NativeAfricaEast Tropical AfricaUganda  
1NativeAfricaNortheast Tropical AfricaEritrea  
1NativeAfricaNortheast Tropical AfricaEthiopia  
1NativeAfricaNortheast Tropical AfricaSomalia  
1NativeAfricaNortheast Tropical AfricaSudan  
1NativeAfricaSouth Tropical AfricaAngola  
1NativeAfricaSouth Tropical AfricaMalawi  
1NativeAfricaSouth Tropical AfricaMozambique  
1NativeAfricaSouth Tropical AfricaZambia  
1NativeAfricaSouth Tropical AfricaZimbabwe  
1NativeAfricaSouthern AfricaBotswana  
1NativeAfricaSouthern AfricaEswatini  
1NativeAfricaSouthern AfricaLesotho  
1NativeAfricaSouthern AfricaNamibia  
1NativeAfricaSouthern AfricaSouth Africa  
1NativeAfricaWest Tropical AfricaBenin  
1NativeAfricaWest Tropical AfricaCôte D'Ivoire  
1NativeAfricaWest Tropical AfricaGhana  
1NativeAfricaWest Tropical AfricaLiberia  
1NativeAfricaWest Tropical AfricaNigeria  
1NativeAfricaWest Tropical AfricaSenegal  
1NativeAfricaWest Tropical AfricaSierra Leone  
1NativeAfricaWest-Central Tropical AfricaCameroon  
1NativeAfricaWest-Central Tropical AfricaZaire  
1NativeAfricaWestern Indian OceanMadagascar  
1NativeAfricaWestern Indian OceanMauritius  
1NativeAsia-TemperateArabian PeninsulaYemen  
2CultivatedAsia-TemperateChinaChinaGuangdong 
2CultivatedAsia-TemperateEastern AsiaJapan  
2CultivatedAsia-TemperateEastern AsiaTaiwan  
4NaturalizedAustralasiaAustraliaAustraliaNew South Wales 
4NaturalizedAustralasiaAustraliaAustraliaNorthern Territory 
4NaturalizedAustralasiaAustraliaAustraliaQueensland 
4NaturalizedAustralasiaAustraliaAustraliaSouth Australias.e.
4NaturalizedAustralasiaAustraliaAustraliaWestern Australia 
4NaturalizedAustralasiaNew ZealandNew Zealand  
4NaturalizedNorthern America Mexico  
4NaturalizedNorthern AmericaSoutheastern U.S.A.United StatesFlorida 
4NaturalizedPacificNorth-Central PacificUnited StatesHawaii 
4NaturalizedSouthern AmericaBrazilBrazilAmazonas 
4NaturalizedSouthern AmericaBrazilBrazilGoias 
4NaturalizedSouthern AmericaBrazilBrazilMato Grosso 
4NaturalizedSouthern AmericaBrazilBrazilMato Grosso do Sul 
4NaturalizedSouthern AmericaBrazilBrazilMinas Gerais 
4NaturalizedSouthern AmericaBrazilBrazilSao Paulo 
4NaturalizedSouthern AmericaCaribbeanBahamas  
4NaturalizedSouthern AmericaCaribbeanCuba  
4NaturalizedSouthern AmericaCaribbeanGuadeloupe  
4NaturalizedSouthern AmericaCaribbeanHispaniola  
4NaturalizedSouthern AmericaCaribbeanJamaica  
4NaturalizedSouthern AmericaCaribbeanPuerto Rico  
4NaturalizedSouthern AmericaMesoamericaCosta Rica  
4NaturalizedSouthern AmericaMesoamericaEl Salvador  
4NaturalizedSouthern AmericaMesoamericaGuatemala  
4NaturalizedSouthern AmericaMesoamericaHonduras  
4NaturalizedSouthern AmericaMesoamericaNicaragua  
4NaturalizedSouthern AmericaMesoamericaPanama  
4NaturalizedSouthern AmericaNorthern South AmericaFrench Guiana  
4NaturalizedSouthern AmericaNorthern South AmericaGuyana  
4NaturalizedSouthern AmericaSouthern South AmericaArgentina  
4NaturalizedSouthern AmericaSouthern South AmericaParaguay  
4NaturalizedSouthern AmericaWestern South AmericaBolivia  
4NaturalizedSouthern AmericaWestern South AmericaColombia  
4NaturalizedSouthern AmericaWestern South AmericaEcuador  
4NaturalizedSouthern AmericaWestern South AmericaEcuadorGalapagos Islands 
4NaturalizedSouthern AmericaWestern South AmericaPeru  
Native
Africa
  • EAST TROPICAL AFRICA: Kenya, Tanzania, Uganda
  • NORTHEAST TROPICAL AFRICA: Eritrea, Ethiopia, Sudan, Somalia
  • SOUTH TROPICAL AFRICA: Angola, Mozambique, Malawi, Zambia, Zimbabwe
  • SOUTHERN AFRICA: Botswana, Lesotho, Namibia, Eswatini, South Africa
  • WEST TROPICAL AFRICA: Benin, Côte D'Ivoire, Ghana, Liberia, Nigeria, Senegal, Sierra Leone
  • WEST-CENTRAL TROPICAL AFRICA: Cameroon, Zaire
  • WESTERN INDIAN OCEAN: Madagascar, Mauritius
Asia-Temperate
  • ARABIAN PENINSULA: Yemen
Cultivated
Asia-Temperate
  • CHINA: China [Guangdong]
  • EASTERN ASIA: Japan, Taiwan
Naturalized
Australasia
  • AUSTRALIA: Australia [New South Wales, Queensland, South Australia (s.e.), Western Australia, Northern Territory]
  • NEW ZEALAND: New Zealand
Northern America
  • REGION: Mexico
  • SOUTHEASTERN U.S.A.: United States [Florida]
Pacific
  • NORTH-CENTRAL PACIFIC: United States [Hawaii]
Southern America
  • BRAZIL: Brazil [Amazonas, Goias, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Sao Paulo]
  • CARIBBEAN: Hispaniola, Bahamas, Cuba, Guadeloupe, Jamaica, Puerto Rico
  • MESOAMERICA: Costa Rica, Guatemala, Honduras, Nicaragua, Panama, El Salvador
  • NORTHERN SOUTH AMERICA: French Guiana, Guyana
  • SOUTHERN SOUTH AMERICA: Argentina, Paraguay
  • WESTERN SOUTH AMERICA: Bolivia, Colombia, Ecuador [Galapagos Islands], Peru
Economic Uses
Animal food
Vertebrate poisons
mammals (fide Kellerman et al., as Panicum maximum) –
Weed
potential seed contaminant (fide Weed CIBA, as P. maximum; Invasive Pl Spec, as P. maximum) –


NGBT Plant Germplasm System Distribution Policy

Plant germplasm is distributed to scientists, educators, producers and other bona fide research and education entities from National genebank of Tunisia active collection sites. The NGBT Curator and/or Research Leader will, in accordance with current NPGS policies and procedures, determine the legitimacy of a request when necessary.

Distributions to fulfill requests for repatriation of subsamples of germplasm collections to a country or community of origin, especially following natural or man-made catastrophes, are considered a high priority.

Although distributions for research, education, and repatriation are of the highest priority, the NPGS also encourages various seed-saver organizations and public gardens to conduct germplasm conservation activities that engage many individuals and groups throughout the country. Elements of the NPGS cooperate with seed-saver organizations and public gardens and may store germplasm for and distribute germplasm to such organizations.

Distribution of germplasm from NPGS collections to fulfill requests from individuals seeking free germplasm strictly for home use is generally considered an inappropriate use of limited resources and conflicts with U.S. Government policy of not competing with commercial enterprises. Requestors can be asked, in an appropriate manner, to justify the use of specific NPGS germplasm instead of suitable commercially available germplasm.

Accessions listed in the Germplasm Resources Information Network (GRIN) database as “not available” due to insufficient or low viability seed and/or scheduled for regeneration will generally not be available for distribution.

Other accessions are listed in GRIN as “not available” because they are not a part of the NPGS collection per se, but are conserved in NPGS genebanks to meet specific needs as described later in the section entitled “Categories of Germplasm Distributed and Availability.” In this category are certain accessions of improved germplasm that are only available from the owner/developer. Other accessions require that specific conditions be met by the requestor before distribution is possible.

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