Taxon: Pyrus calleryana Decne.

Genus: Pyrus
Section: Pashia
Family: Rosaceae
Subfamily: Amygdaloideae
Tribe: Maleae
Subtribe: Malinae
Nomen number: 30463
Place of publication: Jard. fruit. 1:329, sub t. 8. 1872
Link to protologue:
Name Verified on: 31-Oct-2006 by ARS Systematic Botanists. Last Changed: 18-Dec-2008
Species priority site is: Natl. Germplasm Repository - Corvallis (COR)
Accessions: 113 in National Plant Germplasm System (GoogleMap)

Common names:

  • Bradford pear  (Source: AH 505) - English
  • callery pear  (Source: Cornucopia) - English
  • mame-nashi  (Source: F Japan) - Japanese Rōmaji
  • litet kinapäron  (Source: Kulturvaxtdatabas) - Swedish
  • dou li  (Source: F ChinaEng) - Transcribed Chinese

Economic Importance:

  • Environmental: ornamental ()
  • Gene sources: graft stock relative for Asian pear (fide GenomeMap MolecBreed 4:161. 2007)
  • Gene sources: graft stock relative for pear (of historical use, mostly used for grafting ornamental pears fide BioScience 57:957. 2007; although see Fruits 62:22. 2007)
  • Gene sources: secondary genetic relative of Asian pear (based on genetic affinities to Pyrus pyrifolia fide Korean J Breed Sci 41:444. 2009)
  • Gene sources: secondary genetic relative of pear (based on results of crosses with Pyrus communis fide Bull Torr BC 98:23. 1971)
  • Gene sources: secondary genetic relative of Ussurian pear (based on distant affinities to Pyrus ussuriensis fide J Amer Soc Hort Soc 127:266. 2002)
  • Gene sources: waterlogging tolerance for Asian pear (used in Japan as graft stock for Asian pears fide GenomeMap MolecBreed 4:161. 2007)
  • Materials: wood (for furniture)
  • Weed: ()

Distributional Range:


    • CHINA: China [Anhui, Zhejiang, Fujian, Henan, Hunan, Hubei, Jiangxi, Jiangsu, Guangdong, Shandong, Shaanxi (s.), Guangxi]
    • EASTERN ASIA: Korea, Taiwan

    • INDO-CHINA: Vietnam (n.)

    Cultivated (also cult.)


    Northern America
    • North America


  1. Aldén, B., S. Ryman, & M. Hjertson Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource on 2012 (Kulturvaxtdatabas)
  2. Aubréville, A. et al., eds. Flore du Cambodge du Laos et du Viet-Nam. (F CambLVN)
  3. Barbosa, W. et al. 2007. Asian pear tree breeding for subtropical areas of Brazil (Fruits) 62:21-26.
  4. Bell, R. L. & A. Itai 2011. Chapter 8. Pyrus (Wild Crop Rel Tem Fr) 147-177.
  5. Challice, J. S. & M. N. Westwood 1973. Numerical taxonomic studies of the genus Pyrus using both chemical and botanical characters Bot. J. Linn. Soc. 67:123.
  6. Chinese Academy of Sciences Flora reipublicae popularis sinicae. (F China)
  7. Culley, T. M. & N. A. Hardiman 2009. The role of intraspecific hybridization in the evolution of invasiveness: a case study of the ornamental pear tree Pyrus calleryana Biol. Invas. 11:1107-1119.
  8. Culley, T. M. & N. A. Hardiman 2007. The beginning of a new invasive plant: a history of the ornamental callery pear in the United States (BioScience) 57:956-964.
  9. Encke, F. et al. Zander: Handwörterbuch der Pflanzennamen, 13. Auflage. 1984 (Zander ed13)
  10. Facciola, S. Cornucopia, a source book of edible plants. 1990 (Cornucopia)
  11. Hanelt, P., ed. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6. 2001 (Mansf Ency)
  12. Huxley, A., ed. The new Royal Horticultural Society dictionary of gardening. 1992 (Dict Gard)
  13. Itai, A. 2007. Chapter 6. Pear (Genome Map Mol Breed) 4:157-170.
  14. Iwatsuki, K. et al. Flora of Japan. (F Japan)
  15. Kang Hee, C. et al. 2009. Analysis of genetic relationship of pear (Pyrus spp.) germplasms using AFLP markers Korean J. Breed. 41:444-450.
  16. Lee, Y. N. Flora of Korea. (F Korea)
  17. Liberty Hyde Bailey Hortorium Hortus third. (Hortus 3)
  18. Ohwi, J. Flora of Japan (Engl. ed.). (F JapanOhwi)
  19. Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource). (Pl Names)
  20. Teng, Y. 2011. The pear industry in China Chron. Hort. 51:23-27.
  21. Teng, Y.-W. et al. 2002. Genetic relationships of Pyrus species and cultivars native to East Asia revealed by randomly amplified polymorphic DNA markers J. Amer. Soc. Hort. Sci. 127:262-270.
  22. Terrell, E. E. et al. Agric. Handb. no. 505. 1986 (AH 505)
  23. Townsend, C. C. & E. Guest Flora of Iraq. (F Iraq)
  24. Tuz, A. S. 1972. K voprosu klassifikatsii roda Pyrus L. (Up-to-date systematics of the genus Pyrus L.) Trudy Prikl. Bot. 46:77.
  25. Verheij, E. W. M. & R. E. Coronel, eds. 1991. Edible fruits and nuts (Pl Res SEAs) 2:274.
  26. Vincent, M. A. 2005. On the spread and current distribution of Pyrus calleryana in the United States (Castanea) 70:20-31.
  27. Walters, S. M. et al., eds. European garden flora. (Eur Gard F)
  28. Westwood, M. N. & H. O. Bjornstad 1971. Some fruit characteristics of interspecific hybrids and extent of self-sterility in Pyrus Bull. Torrey Bot. Club 98:22-24.
  29. Wu Zheng-yi & P. H. Raven et al., eds. Flora of China (English edition). (F ChinaEng)
  30. Yamamoto, T. & E. Chevreau 2009. Pear genomics (Genet Genom Rosaceae) 8:163-186.

Check other web resources for Pyrus calleryana Decne. :


  • Seed: U.S. National Seed Herbarium image

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2018. Germplasm Resources Information Network (GRIN-Taxonomy).
National Germplasm Resources Laboratory, Beltsville, Maryland. URL: Accessed 18 June 2018.