Pyrus calleryana Decne.

Bradford, Bradford Pear, Bradford pear, Callery Pear

No habitat climate 51 photographs

Every figure on this page is derived from public data by a stated rule and says its source; nothing here is written by a person or a model, except the Wikipedia passage, which is quoted and marked as such. How it is made.

Summary

Pyrus calleryana, also known as the Callery pear, is a species of pear tree native to East Asia in the family Rosaceae. Its cultivar Bradford pear, known for its offensive odor that some have described as akin to "rotting fish", is widely planted throughout the United States and increasingly regarded as an invasive species.

Text from Wikipedia, “Pyrus calleryana”, CC BY-SA 4.0, quoted as written. Kept separate from everything derived here.

About the genus · Pyrus

Pears are a genus of trees, Pyrus, in the family Rosaceae, that bear an edible apple-like fruit of the same name. Several species of pears are cultivated for their fruit and juices, while others are grown as ornamental flowering trees.

Text from Wikipedia, “Pear”, CC BY-SA 4.0, quoted as written.

Family

Rosaceae

Described by

Decne.

Native to

China South-Central, China North-Central, China Southeast +4

Wild records

3 in range· 0 open

Also known as Pyrus calleryana f. calleryana; Pyrus calleryana f. graciliflora Rehder; Pyrus calleryana f. tomentella Rehder; Pyrus calleryana subsp. dimorphophylla (Makino) Koidz.; Pyrus calleryana var. dimorphophylla (Makino) Koidz. and 6 more.

Cultivation

Nothing derived: no habitat climate for this species, and the archetype table has no figure for its genus or family.

Climate across the habitat

No habitat climate can be derived: Only 2 distinct land cells of the climate grid hold an in-range record; three are needed for an envelope.

Natural habitat

Native range as published by WCVP.

No openly licensed record to show inside the range.

NativeChina South-Central, China North-Central, China Southeast, Japan, Korea, Taiwan, Vietnam· introduced: Iraq, West Himalaya, Illinois, Kansas, Missouri, Oklahoma, Indiana, Michigan, New Jersey, New York, Ohio, Pennsylvania, West Virginia, California, Texas, Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia

Kew's description“tree” · “temperate”· quoted from WCVP, RBG Kew (CC BY 4.0); not derived here

Evidence usedThe map marker rests on all 3 georeferenced records inside the native range; none carries a licence permitting republication, so the map shows no points. 846 records outside the range (gardens, roadsides, misidentifications) ignored. Under a dozen records: treat the map as indicative. No climate envelope is derived for this species. 1 in-range record is placed to worse than 10 km and stays on the map but off the climate.

Photographs

Photographs: (c) Kaden Slone, some rights reserved (CC BY) (3); (c) Jacy Chen, some rights reserved (CC BY) (3); no rights reserved · CC0 (2).

Photographs: iNaturalist and GBIF media did not answer when this page was built; what is shown came from the sources that did.

Papers naming this species

Works whose title or abstract names Pyrus calleryana, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Winter rainfall interception by two mature open-grown trees in Davis, California

Qingfu Xiao, E. Gregory McPherson, Susan L. Ustin, Mark E. Grismer (2000) · Hydrological Processes

A new approach to modeling tree rainfall interception

Qingfu Xiao, E. Gregory McPherson, Susan L. Ustin, Mark E. Grismer (2000) · Journal of Geophysical Research Atmospheres

Effect of rooting conditions on the growth and cooling ability of Pyrus calleryana

Mohammad A. Rahman, Jenny Smith, Paul W. Stringer, A. Roland Ennos (2011) · Urban forestry & urban greening

A Comparison of the Shading Effectiveness of Five Different Street Tree Species in Manchester, UK

D. Armson, Mohammad Asrafur Rahman, A. Roland Ennos (2013) · Arboriculture & Urban Forestry

Differences in accumulation of PAHs and metals on the leaves of Tilia × euchlora and Pyrus calleryana

Venera A. Jouraeva, David L. Johnson, John P. Hassett, David J. Nowak (2002) · Environmental Pollution

The role of intraspecific hybridization in the evolution of invasiveness: a case study of the ornamental pear tree Pyrus calleryana

Theresa M. Culley, Nicole A. Hardiman (2008) · Biological Invasions

Genetic Relationships of Pyrus Species and Cultivars Native to East Asia Revealed by Randomly Amplified Polymorphic DNA Markers

Yuanwen Teng, Kenji Tanabe, Fumio Tamura, Akihiro Itai (2002) · Journal of the American Society for Horticultural Science

The Beginning of a New Invasive Plant: A History of the Ornamental Callery Pear in the United States

Theresa M. Culley, Nicole A. Hardiman (2007) · BioScience

Streptomyces lydicus M01 Regulates Soil Microbial Community and Alleviates Foliar Disease Caused by Alternaria alternata on Cucumbers

Mingxuan Wang, Jian Xue, Junjie Ma, Xiaohai Feng (2020) · Frontiers in Microbiology

Effect of Host Tree Species on Cellulase Activity and Bacterial Community Composition in the Gut of Larval Asian Longhorned Beetle

Scott M. Geib, María del Mar Jiménez-Gasco, John E. Carlson, Ming Tien (2009) · Environmental Entomology

Feeding Behavior of Lycorma delicatula (Hemiptera: Fulgoridae) and Response on Feeding Stimulants of Some Plants

Jeongeun Lee, Sang-Rae Moon, Hee-Geun Ahn, Sun-Ran Cho (2009) · Korean journal of applied entomology

Leaf Conductance, Growth, and Survival of Willow and Deciduous Fruit Tree Species under Flooded Soil Conditions

Peter C. Andersen, P. B. Lombard, M. N. Westwood (1984) · Journal of the American Society for Horticultural Science

Other Pyrus 2 in the reference

Pyrus communis Common Pear

Pyrus pyrifolia Asian Pear

History & registers

GBIF POWO IPNI WFO Wikidata Wikipedia iNaturalist

Where this page came from built 2026-09-20 · dossier v2 · node

gbif.species answeredcarried from build of 2026-09-20 (offline re-derivation; the backbone was not asked)

gbif.synonyms answeredcarried from build of 2026-09-20 (offline re-derivation; the backbone was not asked)

gbif.vernacular answeredcarried from build of 2026-09-20 (offline re-derivation; the backbone was not asked)

wcvp.distribution answered

gbif.occurrences answeredGBIF occurrence search API

climate nothing to report

wikidata answeredcarried from build of 2026-09-20 (rederive); that build: carried from build of 2026-09-19 (rederive); that build: carried from build of 2026-09-19 (rederive)

wikipedia answeredcarried from build of 2026-09-20; this build: skipped

inat.taxon not askedcarried from build of 2026-09-20 (rederive)

inat.photos.wild answeredcarried from build of 2026-09-20; this build: skipped

inat.photos.cultivated nothing to reportcarried from build of 2026-09-20 (rederive); that build: carried from build of 2026-09-19 (rederive); that build: carried from build of 2026-09-19 (rederive)

commons nothing to reportcarried from build of 2026-09-20 (rederive); that build: carried from build of 2026-09-19 (rederive); that build: carried from build of 2026-09-19 (rederive)

gbif.media did not answercarried from build of 2026-09-20 (rederive); that build: api.gbif.org not asked: offline re-derivation

openalex answeredcarried from build of 2026-09-20; this build: skipped

Every upstream is recorded as having answered, reported nothing, or refused. Only “nothing to report” is ever shown as an absence. Records came from 4 datasets via GBIF.org; each carries its own licence.