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Taxon:  Lactuca sativa L. var. longifolia Lam. (Lactuca sativa Cos or Romaine Lettuce Group)



Summary
Genus:
Lactuca
Section:
Lactuca
Family:
Asteraceae (alt. Compositae)
Subfamily:
Cichorioideae
Tribe:
Cichorieae
Subtribe:
Lactucinae
Nomen number:
21362
Place of publication:
Encycl. 3:388. 1792
Comment:
[or L. sativa Cos or Romaine Lettuce Group]
Verified:
02/23/1996 ARS Systematic Botanists.
Accessions:
0 (0  active, 0  available) in National Plant Germplasm System. 
Other conspecific taxa
Lactuca sativa L. (0 active accession[s])
Lactuca sativa L. var. angustana L. H. Bailey (0 active accession[s])
Lactuca sativa L. var. capitata L. (0 active accession[s])
Lactuca sativa L. var. crispa L. (0 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Heterotypic Synonym(s)
Lactuca sativa L. var. romana L. H. Bailey
No images


Reference(s)
  1. Encke, F. et al. Zander: Handwörterbuch der Pflanzennamen, 14. Auflage. 1993
  2. Hanelt, P., ed. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6. 2001 4:2060.
  3. International Seed Testing Association. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2. 1982
  4. Komarov, V. L. et al., eds. Flora SSSR. 1934-1964
  5. Koopman, W. J. M. et al. 1998. Phylogenetic relationships among Lactuca (Asteraceae) species and related genera based on ITS-1 DNA sequences. Amer. J. Bot. 85:1517-1530.
  6. Lebeda, A. et al. 2004. Geographical distribution of wild Lactuca species (Asteraceae, Lactuceae). Bot. Rev. (Lancaster) 70:328-356
  7. Liberty Hyde Bailey Hortorium. Hortus third. 1976
  8. Markle, G. M. et al., eds. Food and feed crops of the United States, ed. 2. 1998
  9. Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
  10. Siemonsma, J. S. & Kasem Piluek, eds. 1993. Vegetables. Plant Resources of South-East Asia (PROSEA). 1989- 8:187.
  11. Soó von Bere, K. R., ed. A Magyar flora es vegetacio rendszertani-novenyfoldrajzi kezikonyve. 1964-1980
  12. Vries, I. M. de. 1997. Origin and domestication of Lactuca sativa L. Genet. Resources Crop Evol. 44:166.
  13. Walker, E. Flora of Okinawa and the southern Ryukyu Islands. 1976
Common names
English
cos lettuce –
romaine lettuce –
German
Bindesalat –
römischer Salat –
Italian
lattuga romana –
Distribution
order_codeStatusContinentSubcontinentCountryStateNote
2Cultivated     
Cultivated ()
Economic Uses
UsageTypeNoteReference
Human foodvegetable Encke, F. et al. Zander: Handwörterbuch der Pflanzennamen, 14. Auflage. 1993
Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2025. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://ausgenebank.agriculture.vic.gov.au/gringlobal/taxon/taxonomydetail?id=21362. Accessed 18 December 2025.

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