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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
Name verified on: 31-Oct-2006 by ARS Systematic Botanists. Last updated: 18-Dec-2008
Species priority site is: Natl. Germplasm Repository - Corvallis (COR).
Accessions: 109 in National Plant Germplasm System.

Common names:

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

Economic importance:

  • Environmental: ornamental   (fide Dict Gard)
  • 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 Ussurian pear   (based on distant affinities to Pyrus ussuriensis fide J Amer Soc Hort Soc 127:266. 2002)
  • Gene sources: secondary genetic relative of pear   (based on results of crosses with Pyrus communis fide Bull Torr BC 98:23. 1971)
  • 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 fide F ChinaEng)
  • Weed   (fide Castanea 70:20-31. 2005)

Distributional range:

    China: China - Anhui, Fujian, Guangdong, Guangxi, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi [s.], Shandong, Zhejiang
    Eastern Asia: Korea; Taiwan
    Indo-China: Vietnam [n.]

    North America

  • also cultivated


  • Aldén, B., S. Ryman & M. Hjertson. 2009. Våra kulturväxters namn - ursprung och användning. Formas, Stockholm (Handbook on Swedish cultivated and utility plants, their names and origin).
  • Aubréville, A. et al., eds. 1960–. Flore du Cambodge du Laos et du Viet-Nam.
  • Barbosa, W. et al. 2007. Asian pear tree breeding for subtropical areas of Brazil. Fruits 62:21–26.
  • Bell, R. L. & A. Itai. 2011. Chapter 8. Pyrus. Pp. 147–177 in: Kole, C., ed., Wild crop relatives: genomic and breeding resources, temperate fruits.
  • 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.
  • Chinese Academy of Sciences. 1959–. Flora reipublicae popularis sinicae.
  • 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.
  • 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.
  • Encke, F. et al. 1984. Zander: Handwörterbuch der Pflanzennamen, 13. Auflage.
  • Facciola, S. 1990. Cornucopia, a source book of edible plants.
  • Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6.
  • Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening.
  • Itai, A. 2007. Chapter 6. Pear. In: Kole. C., ed., Genome mapping and molecular breeding in plants (7 vols.) 4:157–170.
  • Iwatsuki, K. et al. 1993–. Flora of Japan.
  • Kang Hee, C. et al. 2009. Analysis of genetic relationship of pear (Pyrus spp.) germplasms using AFLP markers. Korean J. Breed. 41:444–450.
  • Lee, Y. N. 1997. Flora of Korea.
  • Liberty Hyde Bailey Hortorium. 1976. Hortus third.
  • Ohwi, J. 1965. Flora of Japan (Engl. ed.).
  • Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
  • 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.
  • Teng, Y. 2011. The pear industry in China. Chron. Hort. 51:23–27.
  • Terrell, E. E. et al. 1986. Agric. Handb. no. 505.
  • Townsend, C. C. & E. Guest. 1966–. Flora of Iraq.
  • Tuz, A. S. 1972. K voprosu klassifikatsii roda Pyrus L. (Up-to-date systematics of the genus Pyrus L.). Trudy Prikl. Bot. 46:77.
  • Verheij, E. W. M. & R. E. Coronel, eds. 1991. Edible fruits and nuts. In: Faridah Hanum, I. & L. J. G. van der Maesen, eds., Plant Resources of South-East Asia (PROSEA). 2:274.
  • Vincent, M. A. 2005. On the spread and current distribution of Pyrus calleryana in the United States. Castanea 70:20–31.
  • Walters, S. M. et al., eds. 1986–. European garden flora.
  • 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.
  • Wu Zheng-yi & P. H. Raven et al., eds. 1994–. Flora of China (English edition).
  • Yamamoto, T. & E. Chevreau. 2009. Pear genomics. In: Folta, K. M. et al., eds., Genetics and genomics of Rosaceae 8:163–186.


Check other web resources for Pyrus calleryana Decne.:

  • PLANTS: USDA-NRCS Database of Plants of the United States and its Territories
  • BONAP: North American Plant Atlas of the Biota of North America Program
  • Flora of China: Online version from Harvard University
  • TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden
  • Mansfeld: Mansfeld's World Database of Agricultural and Horticultural Crops
  • ICRA: International Cultivar Registration Authority (on-line resource). for Pyrus calleryana cultivars
  • 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 for additional images
  • Google Images 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

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Cite as:
USDA, ARS, National Genetic Resources Program.
Germplasm Resources Information Network - (GRIN) [Online Database].
National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: (05 October 2015)

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