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Taxon: Citrus ×junos Siebold ex Tanaka

Genus: Citrus
Family: Rutaceae
Subfamily: Aurantioideae
Tribe: Aurantieae
Subtribe: Citrinae
Nomen number: 10725
Place of publication: Siebold Centen. Celebr. Festschr. 65; Bull. Sci. Fak. Terk.Kjusu Imp. Univ. 1(1):30. 1924
Link to protologue:
Name Verified on: 06-Nov-1985 by ARS Systematic Botanists.
Accessions: 4 (3 active, 0 available) in National Plant Germplasm System

Common names:

Economic Importance:

  • Food additives: flavoring (rind & juice used for flavor, fruit to make vinegar)
  • Human food: beverage base

Distributional Range:


    • CHINA: China
    • EASTERN ASIA: Japan, Korea


    • CHINA: China


  1. Abkenar, A. A. et al. 2011. Comparative analysis of organelles DNAs in Citrus to clarify the origin of yuzu (Citrus junos Sieb. ex Tanaka) and its relationship with other acid citrus. Acta Hort. 892:57-63. Note: it found "that Yuzu acted as female progenitor in the origin of four acid citrus grown in Japan"
  2. Bae, I. Y. et al. 2011. Preparation and characterization of pectin hydroxamates from Citrus unshiu peels. J. Excip. Food Chem. 2:89. Note: mentions Citrus junos as one of "the most abundantly produced fruits in Korea"
  3. Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
  4. Citrus Crop Germplasm Committee`. 1998. pers. comm. Note: re. common names
  5. Facciola, S. 1990. Cornucopia, a source book of edible plants Kampong Publications. Note: = C. ×junos
  6. Froelicher, Y. et al. 2011. New universal mitochondrial PCR markers reveal new information on maternal citrus phylogeny. Tree Genet. Genomes 7:49-61. Note: this study examined the origin and maternal phylogeny of cultivated citrus; it included a sample of Citrus junos that was resolved among members of the 'Micrantha' mitotype that included species of both the subgenera Papeda and Citrus (sensu Swingle)
  7. Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
  8. Jiangsu Inst. Bot., ed. v. 1; Shan. R. H., ed. v. 2. 1977-1982. Jiangsu Zhiwuzhi (Flora of Jiangsu).
  9. Jung, Y.-H. et al. 2005. Investigation of the phylogenetic relationships within the genus Citrus (Rutaceae) and related species in Korea using plastid trnL-trnF sequences. Sci. Hort. 104:179-188.
  10. Mun-Chan, B. et al. 1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:91.
  11. Nito, N. et al. 2007. Germplasm conservation of indigenous Citrus. Acta Hort. 760:105-108. Note: a cultivar maintained for potential breeding purposes, and considered among traditionally cultivated Citrus in Japan
  12. Penjor, T. et al. 2013. Phylogenetic relationships of Citrus and its relatives based on matK gene sequences. PLoS One 8(4): e62574. Note: this study included four accessions of Citrus junos that grouped within the main mandarin cluster, although some samples split in different subclusters
  13. Personal Care Products Council. INCI
  14. Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
  15. Rahman, M. M. et al. 2001. Cultivar identification of "Yuzu" (Citrus junos Sieb. ex Tanaka) and related acid citrus by leaf isozymes. Sci. Hort. 87:191-198.
  16. Singh, R. & N. Nath. 1969. Practical approach to the classification of Citrus. In: H. D. Chapman (ed.), Proceedings of the First International Citrus Symposium. 1:438.
  17. Steward, A. N. 1958. Manual of vascular plants of the lower Yangtze valley.
  18. Swingle, W. T. & P. C. Reece. 1967. The botany of Citrus and its wild relatives. Note: = Citrus ichangensis? × C. reticulata
  19. Sykes, S. R. 2011. Chloride and sodium excluding capacities of citrus rootstock germplasm introduced to Australia from the People's Republic of China. Sci. Hort. 128:443-449. Note: recognized as a type of mandarin with the name 'Yuzu'
  20. Tan, F. Q. et al. 2015. Comparative metabolic and transcriptional analysis of a doubled diploid and its diploid citrus rootstock (C. junos cv. Ziyang xiangcheng) suggests its potential value for stress resistance improvement. B. M. C. Pl. Biol. 15:89.
  21. Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. Revisio Aurantiacearum. 9:126. Note: Maruzen Co. Ltd, Tokyo.
  22. Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). Note: = Citrus × junos
  23. Yamamoto, M. et al. 2006. Self- and cross-incompatibility of various Citrus accessions. J. Jap. Soc. Hort. Sci. 75:372-378.

Check other web resources for Citrus ×junos Siebold ex Tanaka :

  • Flora of China: Online version from Harvard University
  • TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden
  • 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.

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=10725. Accessed 16 February 2020.