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Taxon: Pachyrhizus tuberosus (Lam.) Spreng.

Genus: Pachyrhizus
Family: Fabaceae (alt.Leguminosae)
Subfamily: Faboideae
Tribe: Phaseoleae
Subtribe: Glycininae
Nomen number: 26290
Place of publication: Syst. veg. 4(2):281. 1827
Link to protologue:
Name Verified on: 28-Oct-1988 by ARS Systematic Botanists.
Accessions: 6 (0 active, 0 available) in National Plant Germplasm System (Map)

Autonyms (not in current use), synonyms and invalid designations:

(≡ homotypic synonym, = heterotypic synonym, - autonym, I invalid designation)

Common names:

Economic Importance:

  • Human food: starch; vegetable; vegetable

Distributional Range:


    Southern America
    • WESTERN SOUTH AMERICA: Ecuador (also prob. escaped/introduced)


    Southern America
    • South America


  1. Adams, C. 1972. Flowering plants of Jamaica Note: mentions
  2. Bernal, R., S. R. Gradstein & M. Celis. 2015. Catálogo de plantas y líquenes de Colombia Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia.
  3. Delêtre, M. et al. 2017. Ecotypic differentiation under farmers' selection: Molecular insights into the domestication of Pachyrhizus Rich. ex DC. (Fabaceae) in the Peruvian Andes. Evol. Applications 10:498-513.
  4. Duke, J. A. 1981. Handbook of legumes of world economic importance
  5. Encke, F. et al. 1984. Zander: Handwörterbuch der Pflanzennamen, 13. Auflage
  6. Food and Agriculture Organization of the United Nations (FAO). 2010. Ecocrop (on-line resource). URL: http://ecocrop.fao.org/ecocrop/srv/en/cropListDetails?code=&relation=beginsWith&name=Pachyrhizus+tuberosus&quantity=1 target='_blank'
  7. Grüneberg, W. J. et al. 2003. A new yam bean (Pachyrhizus spp.) interspecific hybrid. Genet. Resources Crop Evol. 50:757-766.
  8. Liberty Hyde Bailey Hortorium. 1976. Hortus third.
  9. Liogier, H. A. & L. F. Martorell. 1982. Flora of Puerto Rico and adjacent islands: a systematic synopsis. Note: cultivated
  10. Macbride, J. F. et al., eds. 1936-. Flora of Peru Note: 1936-1971; new ser. 1980-
  11. Maréchal, R. et al. 1978. Étude taxonomique d'un groupe complexe d'espèces des genres Phaseolus et Vigna (Papilionaceae) sur la base données morphologiques et polliniques, traitées par l'analyse informatique. Boissiera 28:249.
  12. Markle, G. M. et al., eds. 1998. Food and feed crops of the United States, ed. 2
  13. National Academy of Sciences. 1979. Tropical legumes: resources for the future
  14. Oré Balbin, I. et al. 2007. Review of the Pachyrhizus tuberosus (Lam.) Spreng. Cultivar groups in Peru. Pl. Genet. Resources Newslett. 151:1-11.
  15. Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
  16. Ramos-de-la-Peña, A. M. et al. 2013. Advances and perspectives of Pachyrhizus spp. in food science and technology. Trends Food Sci. Technol. 29:44-54. Note: Elsevier.
  17. Rehm, S. 1994. Multilingual dictionary of agronomic plants
  18. Sørensen, M. et al. 1997. Status of the South American tuberous legume Pachyrhizus tuberosus (Lam.) Spreng.. Biodivers. & Conservation 6:1581-1625.
  19. Sørensen, M. 1988. A taxonomic revision of the genus Pachyrhizus (Fabaceae-Phaseoleae). Nordic J. Bot. 8:185.
  20. Sørensen, M. 1990. Observations on distribution, ecology and cultivation of the tuber-bearing legume genus Pachyrhizus Rich. ex DC.. Agric. Univ. Wageningen Pap. 90-3:7.
  21. Soukup, J. 1970. Vocabulario de los nombres vulgares de la flora peruana.
  22. Tapia, C. & M. Sørensen. 2003. Morphological characterization of the genetic variation existing in a Neotropical collection of yam bean, Pachyrhizus tuberosus (Lam.) Spreng.. Genet. Resources Crop Evol. 50:681-692.

Check other web resources for Pachyrhizus tuberosus (Lam.) Spreng. :

  • TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden
  • ILDIS: International Legume Database & Information Service
  • Mansfeld: Mansfeld's World Databas 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.
  • PubAg: USDA's National Agricultural Library database of full-text journal articles and citations on the agricultural sciences.


  • Seed: U.S. National Seed Herbarium image

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2020. Germplasm Resources Information Network (GRIN-Taxonomy).
National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=26290. Accessed 9 July 2020.