Eriobotrya japonica
Enable an agent to recognise Eriobotrya japonica, distinguish species knowledge from observations of particular loquat trees and populations, and judge appropriate monitoring, cultivation and conservation actions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise Eriobotrya japonica, distinguish species knowledge from observations of particular loquat trees and populations, and judge appropriate monitoring, cultivation and conservation actions.
Eriobotrya japonica (Thunb.) Lindl., commonly called loquat, is an evergreen fruit-tree species in the rose family Rosaceae, native to China and cultivated for its edible pome fruits.
It can be Identify a candidate loquat from documented organ characters and request missing diagnostic evidence.; Reconcile scientific names and database records with the registered species concept.; Track flowering and fruit retention against local weather and cultivar provenance.; Assess a planting site and propose cultivation or propagation actions supported by local evidence.; Document symptoms and route uncertain disease diagnoses for confirmation.; Monitor wild or escaped populations and distinguish conservation needs from local spread management..
Distinguishing features
Check the combined foliage characters: persistent, alternate, leathery leaves with coarse teeth, conspicuous veins and downy undersides; a common name alone is insufficient. [NC State botanical description](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
Examine terminal, hairy flower panicles bearing small, fragrant, pale, five-petalled flowers; retain photographs of attachment and hairs. [NC State flower description](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
Check mature fruit for yellow-to-orange pome form and large seeds; use fruit anatomy to investigate records labelled Japanese plum or confused with kumquat. [NC State fruit description](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
Use locally observed autumn-to-winter flowering as supporting evidence, while allowing geographic variation and missing reproductive material. [NC State phenology](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
Scope
+ Taxonomic identity, authority, synonyms and external taxonomy mappings
+ Identification from foliage, flowers and fruit, with evidence and uncertainty
+ Life stages, flowering, pollination, fruit development and recruitment
+ Native provenance, cultivation, naturalisation and population conservation
+ Individual condition, site suitability and biological constraints on intervention
- Other Eriobotrya species and superficially similar plants
- Harvested loquat fruit as a food commodity or processed product
- Medicinal preparations, clinical efficacy and treatment decisions
- Orchard businesses, market pricing and agricultural supply chains
- Pathogens and pests as independently modelled organisms
Characteristics
- Taxonomic concept
- Registry identity linked to an authority-qualified species concept and dated checklist Preserves identity when taxonomic treatments use different generic placements.
- Observation subject
- Species concept | population | individual tree | attached organ | voucher Prevents a tree's condition or an orchard's abundance from becoming a species-wide claim.
- Identification support
- Provisional | supported by diagnostic material | expert-verified | conflicting Determines whether an agent can proceed or must obtain reproductive material or expert review.
- Cultivar and propagation lineage
- Named or unknown cultivar; seed parent, scion and rootstock links where documented Keeps cultivar performance and grafted components distinct from species expectations.
- Life and reproductive stage
- Seed | seedling | juvenile | reproductive adult | senescent | dead; vegetative, flowering and fruit stages recorded separately Separates developmental immaturity from seasonal or stress-related absence of fruit.
- Seasonal timing
- Local dates of bud development, flowering, fruit set and ripening; observation year and location Supports site-specific scheduling without imposing one calendar on all climates.
- Reproductive performance
- Flowers and retained fruits per sampled panicle; fruit-set percentage with sampling interval Makes poor fruiting assessable rather than equating it with poor whole-tree health.
- Cold exposure during reproduction
- Minimum temperature in degrees Celsius and exposure duration in hours, linked to organ stage Allows observed reproductive damage to be evaluated against actual weather.
- Site water and light conditions
- Soil moisture with method; waterlogging duration in hours; direct sunlight in hours per day Supports diagnosis and planting decisions using measured site conditions.
- Occurrence origin
- Native wild | planted | escaped | naturalised | uncertain, with locality and evidence Distinguishes cultivated presence from native distribution and autonomous recruitment.
- Tree condition
- Symptoms by organ, onset date, affected crown percentage and diagnostic confidence Separates observations from unconfirmed causal diagnoses.
- Conservation assessment
- Assessment authority, category, year, geographic scope and assessed taxon; unverified until sourced Prevents horticultural abundance or missing assessment data from implying low extinction risk.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 19 findings · 32 questions.
Loquat identity Resolve the registered species across scientific names, common names and database treatments.
Generic reassignment and ambiguous horticultural names can otherwise create duplicate or misidentified records.
Scientific name and concept
Anchor the registry to a named, dated taxonomic treatment.
Accepted name and synonyms
Kew accepts Eriobotrya japonica (Thunb.) Lindl., published in 1821, in Rosaceae, and lists Rhaphiolepis bibas among its synonyms. Preserve treatment-specific names under the same registry identity when their concepts match. [Kew POWO](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:724793-1)
- Which dated taxonomic authority defines the species concept used by this record? provenance
- Does a record named Rhaphiolepis bibas refer to the same circumscription or require reconciliation? boundary
Cross-database recognition
Match identifiers while retaining the evidence behind field identification.
Identifiers and vouchers
NCBI records this species as taxonomy ID 32224; other mappings require independent verification. A database match does not establish a specimen's identity. [NCBI Taxonomy](https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=32224)
- Which GBIF taxon key and backbone version correspond to this species concept? provenance
- Which voucher or diagnostic images distinguish the observed plant from other plants sold under similar common names? measurement
Tree and propagation lineage Distinguish species membership, individual development and cultivated lineage.
A named cultivar, seedling and grafted tree support different expectations about identity and performance.
Individual and life stage
Locate observations on a particular tree and distinguish age from reproductive activity.
Developmental state
Record loquat life stage separately from current flowering or fruiting, with a stable individual identity across repeat observations.
- Is this a seedling, juvenile or previously reproductive tree, and what supports that classification? definition
- Does the record concern one tree, multiple stems of one tree or several independently established plants? boundary
Cultivar, scion and rootstock
Track planting material without assigning unverified cultivar identity.
Propagation provenance
Require documentary support for cultivar and propagation claims; identify which graft component produced the observed shoot or fruit.
- What nursery, accession or propagation record supports the cultivar and scion identity? provenance
- Is the sampled growth above or below a graft union, and is its taxonomic identity established? boundary
Flowering and fruit set Assess seasonal reproduction and distinguish its limitations from whole-tree survival.
Successful growth does not establish that a site or cultivar will produce fruit.
Reproductive calendar and weather
Link organ stages to the weather they actually experienced.
Stage-specific cold response
Flower and fruit cold sensitivity differs from tree survival; assess damaged organs separately. [NC State cultivation notes](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
- Which flowering or fruit stage coincided with the measured cold event? measurement
- What locally validated evidence supports protection or a change of planting site? action
Pollination and retention
Investigate reproductive function before attributing absent fruit to a single cause.
Flower function and fruit retention
Record flower sexual function, cultivar compatibility evidence, pollinator observations and successive fruit counts; do not infer separate male and female trees from fruiting differences.
- What botanical evidence establishes flower sexual function and whether sexual dimorphism is applicable? definition
- What cultivar-specific evidence establishes self-compatibility or benefit from a compatible pollen source? provenance
- At which stage did flowers or developing fruits fail, and what proportion was lost? measurement
Range and population fate Separate native provenance, cultivated occurrence and self-sustaining populations.
Long cultivation history makes occurrence records insufficient evidence of native range or conservation security.
Native and introduced provenance
Attach origin claims to an explicit geographic treatment.
Range evidence
Kew places the native range in Chongqing and Hubei, China, and lists Japan as introduced; retain the authority because origin descriptions differ between references. [Kew distribution](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:724793-1)
- Which flora or specimen history supports native, planted or introduced status at this locality? provenance
- Does the location describe a wild habitat, an orchard, an ornamental planting or an escape site? boundary
Recruitment and conservation
Assess population persistence and conservation claims at their proper scale.
Wild population evidence
Track recruitment and mortality independently of planting, and attach conservation categories only to verified assessments.
- Do repeated surveys show unassisted seedling recruitment and survival beyond planted parent trees? measurement
- What verified IUCN category and assessment year apply, and what geographic or taxonomic limits accompany them? provenance
- Does local evidence support conserving this population, monitoring spread or requesting a regional ecological assessment? action
Condition and intervention Connect tree symptoms, site observations and intended uses to justified actions.
Loquat care requires distinguishing reproductive failure, disease, environmental stress and the particular organ being used.
Symptoms and site fit
Use organ-level evidence to investigate decline.
Differential condition assessment
Fire blight is a documented loquat problem, but a symptom record alone does not confirm it. [NC State plant problems](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
- Which shoots, leaves, flowers or fruits are affected, and how has damage progressed? measurement
- What evidence distinguishes suspected infection from cold injury or unsuitable root-zone conditions? provenance
- Which observations or diagnostic results are needed before selecting pruning, irrigation changes or specialist treatment? action
Organ-specific use
Keep biological observations distinct from harvested products and use claims.
Harvest and material boundary
Distinguish fruit flesh from seeds when linking use evidence; edible flesh does not establish seed suitability. [NC State organ-specific information](https://plants.ces.ncsu.edu/plants/eriobotrya-japonica/)
- Does the proposed action concern an attached fruit, harvested flesh, seeds or another plant organ? boundary
- What cultivar-specific maturity observations justify harvest, and which food or preparation model takes responsibility afterward? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This account is based on recall, with no sources consulted.
- Verify current taxonomic treatment, including placement in Eriobotrya versus Rhaphiolepis, publication date of the name, and exact database identifiers.
- IUCN assessment status and year are not recalled confidently and are omitted; verify these separately from local abundance or cultivation.
- Which of these check these first hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Cultivar 'Tanaka'
- Cultivar 'Algerie'
- Cultivar 'Gold Nugget'
- Which of these kinds and varieties hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Botanical nomenclature - Eriobotrya japonica (Thunb.) Lindl. - Names the species, not an individual tree, population or cultivar; the parenthesized authority indicates an earlier generic placement.
- GBIF taxon key - Integer taxon identifier - The exact identifier and accepted-name treatment require verification.
- NCBI Taxonomy - Integer TaxID - The exact species identifier is not recalled confidently.
- Which of these identifiers and schemes hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- International Code of Nomenclature for algae, fungi, and plants, maintained through the International Botanical Congress nomenclature process: governs the scientific name.
- International Code of Nomenclature for Cultivated Plants, published by the International Society for Horticultural Science: governs cultivar naming.
- Which of these standards and regulation hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Fresh fruit production.
- Fruit preserves, jams and jellies.
- Ornamental planting for evergreen foliage and seasonal flowers.
- Which of these real-world use hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Mature tree height - Approximately 5-10 - m
- Fruit length - Approximately 3-5, varying with cultivar and growing conditions - cm
- Which of these typical measurements hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Autumn or winter flowering exposes flowers and developing fruit to frost damage.
- Susceptibility to fire blight caused by Erwinia amylovora.
- Seeds contain cyanogenic compounds and should not be treated as edible fruit flesh.
- Fruit bruises readily, limiting handling and storage.
- Which of these failure modes and hazards hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Native to China; widespread cultivation and naturalization complicate identification of genuinely wild populations.
- Grown in subtropical and mild temperate regions; winter conditions strongly influence fruit production.
- Cultivars differ in flesh colour, fruit size, acidity and ripening season.
- Which of these regional variation hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Mespilus germanica - The common medlar is deciduous and its fruit is typically eaten after bletting; loquat is evergreen and its ripe fruit does not normally require bletting.
- Prunus japonica - Japanese bush cherry belongs to Prunus and bears stone fruits; loquat bears pomes.
- A loquat cultivar - A cultivar is a selected cultivated entity within the species, distinguished by maintained horticultural traits.
- An individual loquat tree - An individual has a particular age, location and condition; the species encompasses many individuals and populations.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Eriobotrya japonica this model covers, and on what evidence? provenance
What the second pass must settle
- What verified GBIF taxon key and backbone version match the adopted Eriobotrya japonica concept, including records under Rhaphiolepis names?
- Does a current IUCN assessment exist for this exact taxon, and what are its category, assessment year and population scope?
- How should conflicting native-range accounts be resolved using regional floras and evidence separating wild populations from ancient cultivation?
- What primary evidence establishes floral sexual function, any relevant sexual dimorphism, and cultivar-specific pollination compatibility?
- Which locally tested thresholds and observations distinguish cold-related crop loss, unsuitable growing conditions and disease sufficiently to guide intervention?