Atropa bella-donna
Enable an agent to recognise Atropa bella-donna, distinguish species-level knowledge from observations of plants and populations, and choose evidence-based monitoring and handling 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 Atropa bella-donna, distinguish species-level knowledge from observations of plants and populations, and choose evidence-based monitoring and handling actions.
Atropa belladonna L. (1753), commonly called deadly nightshade, is a poisonous perennial herbaceous plant species in the family Solanaceae, native to parts of Europe, North Africa and western Asia, and containing tropane alkaloids such as hyoscyamine and scopolamine.
It can be Compare documented morphology with an authoritative botanical key and request expert determination when evidence is incomplete.; Attach photographs, vouchers and determinations to an individual or occurrence without changing species-level claims.; Monitor flowering, fruiting, seasonal reappearance and recruitment at a defined site.; Compare local occurrence evidence with sourced native-range and establishment records.; Flag accessible plant material for exposure prevention and route suspected poisoning to an appropriate emergency service.; Evaluate retention, collection or removal against identification confidence, local conservation evidence and applicable permissions..
Distinguishing features
Check reproductive structures for hanging, usually solitary, bell-shaped flowers; colour alone is insufficient because brownish-purple, greenish and yellowish flowers occur. [RHS profile](https://www.rhs.org.uk/plants/43837/atropa-belladonna/details)
Check the combination of shiny black fruit, upright branching herbaceous growth and pointed oval leaves; a black berry alone cannot establish identity. [RHS profile](https://www.rhs.org.uk/plants/43837/atropa-belladonna/details)
Resolve the name to Atropa bella-donna L., an accepted species in Solanaceae first published in 1753; a common-name match is insufficient. [Kew POWO](https://powo.science.kew.org/taxon/814358-1)
Distinguish the registered species from Atropa acuminata: GBIF treats the latter separately despite recording a historical combination under A. bella-donna. [GBIF Atropa acuminata](https://www.gbif.org/taxon/B3MMF)
Distinguish an intact plant or botanical specimen from a product labelled belladonna; product naming does not establish organism identity or composition.
Scope
+ Taxonomic identity, nomenclatural authority and cross-database reconciliation
+ Diagnostic observations and uncertainty in identification
+ Individual life stages, reproductive condition and seasonal persistence
+ Native or introduced occurrence, habitat and population monitoring
+ Plant-associated toxicity, exposure opportunities and handling decisions
- Atropine, hyoscyamine and scopolamine as independently modelled chemical substances
- Belladonna extracts, pharmaceutical products and homeopathic preparations
- Clinical diagnosis and treatment of poisoning
- Other Atropa species and plants sharing the common name nightshade
- Whole woodland ecosystems and general land-management procedures
Characteristics
- Taxonomic identity
- Atropa bella-donna L.; species; Solanaceae; first publication 1753 Anchors observations to an explicit taxonomic treatment. [Kew POWO](https://powo.science.kew.org/taxon/814358-1)
- External taxon correspondence
- NCBI Taxonomy 33113 under Atropa belladonna; GBIF Catalogue of Life record VJTGV; retain provider and version Supports evidence exchange without assuming identical spellings or identifiers imply identical taxon concepts. [NCBI](https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=33113&lvl=0), [GBIF](https://www.gbif.org/taxon/VJTGV)
- Biological subject level
- species concept | local population | individual plant | detached specimen Prevents transferring a specimen measurement or local population decline to the entire species.
- Identification confidence
- unresolved | provisional | expert-confirmed; supporting observations and determination date Controls whether an observation can support occurrence records or consequential management.
- Observed reproductive morphology
- flower shape, orientation and colour; fruit colour and arrangement; calyx appearance; unavailable Preserves the observable evidence needed to compare candidate identifications.
- Plant dimensions
- height in cm; leaf length and fruit diameter in mm; organ and observation date Supports identification and growth monitoring without treating horticultural size ranges as universal limits.
- Developmental and seasonal condition
- seed | seedling | vegetative | flowering | fruiting | senescent shoots | dormant | dead | unresolved; concurrent states allowed Separates reproductive timing and seasonal shoot loss from whole-plant mortality.
- Occurrence establishment
- native | introduced-established | introduced-casual | cultivated | uncertain; geographic unit and evidence date Separates a cultivated observation from evidence of a wild population.
- Habitat observations
- soil pH; canopy cover in percent; soil moisture with method; elevation in m Allows local habitat associations to be assessed from observations.
- Population condition
- counting unit, abundance, recruitment, occupied area in square metres and trend with survey effort Distinguishes persistence of established plants from successful replacement.
- Conservation assessment
- assessment body, category, geographic scope, assessment year and source; unverified when unavailable Keeps global IUCN assessment, regional status and legal protection separate.
- Exposure opportunity
- accessible fruit or plant material; human or animal access; suspected ingestion; controls present; unknown Supports site-specific handling decisions for a plant identified as toxic if eaten. [RHS profile](https://www.rhs.org.uk/plants/43837/atropa-belladonna/details)
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 · 18 findings · 31 questions.
Taxonomic identity Anchor belladonna records to the registered species and a named taxonomic treatment.
Spelling differences, historical names and medicinal labels can otherwise merge distinct subjects.
Accepted name
Record nomenclatural identity and external mappings.
Name and authority
Use Atropa bella-donna L., published in 1753, as the accepted name under the consulted treatment. [Kew POWO](https://powo.science.kew.org/taxon/814358-1)
- Which taxonomic treatment and retrieval date establish the accepted name and circumscription? provenance
- Do the NCBI and GBIF records represent the same species concept, and which spelling and identifier does each provider use? boundary
Biological boundaries
Separate taxon assertions, observed plants and derived materials.
Subject and material
Every assertion must identify whether it concerns the species, a population, an individual or material taken from a plant.
- Does this record describe the species, a local population, one plant or a detached specimen? definition
- Is a belladonna-labelled item botanical material with documented origin or a preparation requiring a separate product model? boundary
Botanical recognition Assess identity through observable characters and explicit exclusion of alternatives.
A consequential identification cannot rest on the words nightshade or black berry.
Observable characters
Capture reproductive and vegetative evidence together.
Diagnostic character set
Record flowers, fruit, calyx, leaves and whole-plant habit, distinguishing absent organs from unobserved ones.
- What flower shape, orientation, colour and arrangement are directly visible? measurement
- What fruit, calyx and leaf observations accompany the whole-plant photograph? measurement
Alternative identifications
Test the determination against plausible local lookalikes.
Lookalike exclusion
Require a sourced regional key to exclude other Atropa species, black nightshades and other locally plausible berry-bearing plants.
- Which key characters exclude Solanum nigrum-group plants, Solanum dulcamara and relevant Atropa alternatives? boundary
- Does missing reproductive material require the determination to remain provisional or receive expert review? action
Development and reproduction Track perennial persistence, life stages and reproductive outcomes.
Seasonal disappearance and fruit production answer different questions about plant survival and population replacement.
Seasonal persistence
Interpret repeated observations of a perennial plant.
Survival versus shoot loss
The species is perennial; record evidence before interpreting missing above-ground growth as mortality. [Kew POWO](https://powo.science.kew.org/taxon/814358-1)
- Which developmental states are present on this plant at the observation date? measurement
- What repeat observation distinguishes dormancy, damaged shoots and whole-plant death? boundary
Reproductive evidence
Separate flower production, fruit set and recruitment.
Flower to recruit
Record reproductive structures and outcomes without inventing male and female plant categories or assuming fruit proves viable offspring.
- What floral sexual system and any sex-associated variation are established by botanical sources? provenance
- What observations distinguish flowering, fruit set, viable seed and established seedlings? measurement
- Which pollination or seed-dispersal interactions are observed locally rather than inferred? provenance
Range and population Locate plants geographically and assess establishment, habitat and persistence.
An occurrence point does not establish native status, a viable population or conservation security.
Geographic establishment
Compare occurrences with sourced range and habitat evidence.
Range and site context
Kew reports the native range as Europe to northern Iran and northwestern Africa; local establishment still requires separate evidence. [Kew POWO](https://powo.science.kew.org/taxon/814358-1)
- Is this occurrence native, introduced or cultivated according to a source covering this geographic unit? provenance
- What light, soil, moisture and disturbance conditions were measured at the occupied site? measurement
Persistence and status
Distinguish local demographic evidence from formal assessments.
Population and assessment
Keep repeat counts, recruitment, formal threat assessments and legal protection as separate evidence streams.
- Do repeated surveys count plants, shoots or patches, and does comparable effort support a population trend? measurement
- What global IUCN assessment and regional assessments exist, with which years and geographic scopes? provenance
- Which documented protection or collection constraints apply to this population? action
Toxicity and site decisions Connect plant identity and exposure conditions to appropriate handling decisions.
Botanical recognition must inform access and handling without becoming a dosing or treatment model.
Hazard evidence
Separate species-level toxicity from specimen-specific chemical measurements.
Plant hazard and assays
Treat the plant as toxic if eaten; any chemical assay must retain its sampled organ, method and provenance. [RHS profile](https://www.rhs.org.uk/plants/43837/atropa-belladonna/details)
- Which authoritative source supports the recorded hazard and exposure route? provenance
- If alkaloid content is measured, which plant, organ, collection date, analytical method and fresh- or dry-mass basis does the result describe? measurement
Handling and escalation
Choose actions from exposure opportunity, site purpose and verified constraints.
Site-specific action
Record access to plant material and select justified controls, handling or specialist escalation.
- Can children, visitors, pets or livestock access fruit or other plant material at this site? measurement
- Which action is justified: restricted access, labelling, supervised retention or authorised removal? action
- Does suspected exposure require immediate referral to the relevant poison information, emergency or veterinary service? 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 is recalled knowledge, not source-checked research; exact database identifiers and any infraspecific taxa should be verified.
- No IUCN category or assessment year is confidently recalled; neither should be inferred from local abundance.
- Plants develop from seedlings into flowering and fruiting perennials that can resprout from underground organs; flowers are bisexual, rather than borne on separate male and female plants.
- Which of these check these first hold for the sense of Atropa bella-donna 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 scientific name - Atropa belladonna L. - The registered spelling Atropa bella-donna refers to this species; L. denotes Carl Linnaeus, who published the name in 1753.
- GBIF taxon key - Integer taxon identifier - The species-specific value is not confidently recalled.
- NCBI Taxonomy ID - Integer taxonomy identifier - The species-specific value is not confidently recalled.
- Which of these identifiers and schemes hold for the sense of Atropa bella-donna this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- The International Code of Nomenclature for algae, fungi, and plants, adopted through International Botanical Congresses, governs its botanical naming.
- Which of these standards and regulation hold for the sense of Atropa bella-donna this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Cultivation as a source of tropane alkaloids for pharmaceutical production.
- Pharmacognostic study of medicinal plants and their chemical constituents.
- Historical medicinal and cosmetic use, including pupil dilation, with substantial poisoning risk.
- Which of these real-world use hold for the sense of Atropa bella-donna this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Mature above-ground height - Approximately 0.5-2 - m
- Which of these typical measurements hold for the sense of Atropa bella-donna 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.
- All parts are poisonous; ingestion can cause severe or fatal antimuscarinic poisoning.
- Glossy black berries can be mistaken for edible fruit, particularly by children.
- Poisoning can produce dry mouth, dilated pupils, rapid heartbeat, overheating, delirium and seizures.
- Alkaloid concentrations vary among plant parts, individuals and growing conditions, making unstandardized preparations unpredictable.
- Which of these failure modes and hazards hold for the sense of Atropa bella-donna 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 parts of Europe, North Africa and western Asia; exact native boundaries require verification.
- Introduced and locally naturalized beyond its native range, including parts of North America.
- Often associated with woodland margins, clearings and disturbed ground, especially on calcareous soils.
- Which of these regional variation hold for the sense of Atropa bella-donna 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.
- Atropa - Atropa is the genus; Atropa belladonna is a species within it.
- Solanum nigrum - Black nightshade belongs to a different genus and typically has small white star-shaped flowers and clustered berries; Atropa belladonna has larger bell-shaped flowers and usually solitary berries.
- Atropine - Atropine is a chemical substance, the racemic form of hyoscyamine, rather than a plant taxon.
- An individual deadly nightshade plant - An individual is one organism with its own life history; the species encompasses populations and their members.
- A deadly nightshade population - A population comprises plants occurring in a particular area; its abundance and condition do not establish the status of the species as a whole.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Atropa bella-donna this model covers, and on what evidence? provenance
What the second pass must settle
- What is the verified global IUCN assessment category and assessment year, if any, and which regional assessments apply? Absence of a retrieved assessment must not be recorded as Least Concern or Not Evaluated.
- Does the legacy GBIF species key 3802655 reconcile exactly with the current Catalogue of Life-backed GBIF record VJTGV and NCBI Taxonomy 33113?
- Which regional botanical keys establish reliable separation from other Atropa species and local nightshade lookalikes, including atypical colour forms and plants lacking flowers or fruit?
- What primary evidence establishes floral sexual organisation, breeding system, pollinators, seed dispersers and dormancy requirements across relevant populations?
- Which local population data and jurisdiction-specific rules are needed to justify retention, collection or removal at a proposed management site?