USDA ARS United States Department of Agriculture
Agricultural Research Service, Beltsville Area

Germplasm Resources Information Network (GRIN)

  GRIN Taxonomy for Plants
Jump to common names  Jump to economic impacts  Jump to distribution  Jump to references  Jump to links to other online resources  Jump to images

***Please tell us why you value GRIN Taxonomy***

Taxon: Dioscorea trifida L. f.

Genus: Dioscorea
Family: Dioscoreaceae
Nomen number: 14263
Place of publication: Suppl. pl. 427. 1782 ("1781")
Name verified on: 12-May-1995 by ARS Systematic Botanists. Last updated: 18-Oct-2001
Species priority site is: Natl. Germplasm Repository - Miami (MIA).


Common names:

  • cush-cush   (Source: Dict Gard ) – English
  • cush-cush yam   (Source: Dict Rehm ) – English
  • yampee   (Source: Dict Gard ) – English (Jamaica)
  • couche-couche   (Source: Dict Rehm ) – French
  • cousse-couche   (Source: Dict Rehm ) – French
  • Kusch-kusch   (Source: Dict Rehm ) – German
  • Kuschkusch-Yamswurzel   (Source: Zander ed17 ) – German
  • cará-doce   (Source: Dict Rehm ) – Portuguese
  • inhame   (Source: D. Groth, p.c. 2005) – Portuguese (Brazil)
  • ñame   (Source: Esp Veg Prom ) – Spanish
  • ñame de la India   (Source: Dict Rehm ) – Spanish
  • mapuey   (Source: AH 505 ) – Spanish
  • tabena   (Source: Esp Veg Prom ) – Spanish (Colombia)
  • sacha papa   (Source: Esp Veg Prom ) – Spanish (Peru)

Economic importance:

  • Human food: vegetable   (fide Dict Econ Pl)
  • Gene sources: primary genetic relative of cush-cush yam   (based on probable hybridization with tetraploid Dioscorea trifida fide Genome 53:378. 2010)
  • Gene sources: probable progenitor of cush-cush yam   (based on autoplyploidization event fide Genome 53:378. 2010)

Distributional range:

    Caribbean: Guadeloupe; Martinique; St. Lucia; St. Vincent and Grenadines - St. Vincent
    Mesoamerica: Costa Rica; Honduras; Nicaragua; Panama
    Northern South America: French Guiana; Guyana; Suriname; Venezuela - Amazonas, Anzoategui, Monagas
    Brazil: Brazil [n.?]
    Western South America: Ecuador - Napo; Peru

    Western South America: Colombia
  • also cultivated


  • Adams, C. 1972. Flowering plants of Jamaica. 66.
  • Bernal, R., S. R. Gradstein & M. Celis. Catálogo de plantas y líquenes de Colombia
  • Bhattacharjee, R. et al. 2011. Chapter 4. Dioscorea. Pp. 71–96 in: Kole, C., ed., Wild crop relatives: genomic and breeding resources, industrial crops.
  • Boggan, J. et al. 1997. Checklist of the plants of the Guianas, ed. 2.
  • Bousalen, M. et al. 2010. Evidence of diploidy in the wild Amerindian yam, a putative progenitor of the endangered species Dioscorea trifida (Dioscoreaceae). Genome 53:371–383. [it confirmed wild Dioscorea trifida as diploid, and its probably role as an ancestor of cultivated, tetraploid plants].
  • Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45.
  • Correa, J. E. & H. Y. Bernal. 1992. Especies vegetales promisorias de los paises del Convenio Andres Bello. 7:1–92.
  • Davidse, G. et al., eds. 1994. Flora mesoamericana.
  • Erhardt, W. et al. 2002. Zander: Handwörterbuch der Pflanzennamen, 17. Auflage.
  • Food and Agriculture Organization of the United Nations (FAO). 2010. Ecocrop (on-line resource).
  • Groth, D. 2005. pers. comm. [re. Brazilian common names].
  • Hammel, B. E. et al., eds. 2003–. Manual de plantas de Costa Rica.
  • Howard, R. 1979. Flora of the lesser Antilles. 3:510.
  • Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening.
  • Jørgensen, P. M. & S. León-Yánez, eds. 1999. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75.
  • Kartesz, J. T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland.
  • León (J. S. Sauget) & Alain (E. E. Liogier). 1946–1962. Flora de Cuba.; suppl. 1969
  • Liogier, H. A. & L. F. Martorell. 1982. Flora of Puerto Rico and adjacent islands: a systematic synopsis.
  • Markle, G. M. et al., eds. 1998. Food and feed crops of the United States, ed. 2.
  • Nascimento, W. F. et al. 2013. Spatially structured genetic diversity of the Amerindian yam (Dioscorea trifida L.) assessed by SSR and ISSR markers in southern Brazil. Genet. Resources Crop Evol. 60:2405–2420. [it examined genetic diversity of 53 landraces from four Brazilian States of tetraploid Dioscorea trifida].
  • Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
  • Rehm, S. 1994. Multilingual dictionary of agronomic plants.
  • Stevens, W. D. et al., eds. 2001. Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85(1-3).
  • Steyermark, J. A. et al., eds. 1995–. Flora of the Venezuelan Guayana.
  • Terrell, E. E. et al. 1986. Agric. Handb. no. 505.
  • Uphof, J. C. T. 1968. Dictionary of economic plants, ed. 2.

Check other web resources for Dioscorea trifida L. f.:

  • TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden
  • Mansfeld: Mansfeld's World Database of Agricultural and Horticultural Crops
  • ePIC: Electronic Plant Information Centre of Royal Botanic Gardens, Kew
  • AGRICOLA: Article Citation Database or NAL Catalog of USDA's National Agricultural Library
  • Entrez: NCBI's search engine for PubMed citations, GenBank sequences, etc.

Check other web resources for images:

  • Google Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy

| USDA | ARS | GRIN | NPGS | New Search |

Cite as:
USDA, ARS, National Genetic Resources Program.
Germplasm Resources Information Network - (GRIN) [Online Database].
National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: (08 October 2015)

Please send us your comments

Close Window

Ctrl P to print