Symphytum officinale
Enable an agent to recognise Symphytum officinale, record the condition and provenance of living plants or specimens, and assess appropriate identification, cultivation 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 Symphytum officinale, record the condition and provenance of living plants or specimens, and assess appropriate identification, cultivation and handling actions.
Symphytum officinale L., commonly called common comfrey, is a perennial herbaceous flowering plant in the family Boraginaceae, characterized by rough hairy leaves, winged stems and clusters of tubular, bell-shaped flowers.
It can be Guide collection of leaf, stem and flower observations for a reviewable species determination.; Track seasonal development, plant condition and changes in occupied area.; Document planting, division, cutting and soil disturbance, then assess subsequent regrowth.; Plan identification-preserving sampling through photographs and voucher records.; Flag proposed food, medicinal or feed uses for evidence specific to identity, plant part and preparation.; Record removal attempts and schedule checks for surviving plants or regrowth..
Distinguishing features
Require a species-level determination: the common name 'comfrey' alone does not distinguish Symphytum officinale from related species or hybrids.
Examine how the leaves extend down the stem and form stem wings; record their extent against a regional identification key rather than treating hairiness as diagnostic.
Compare mature flowers, including corolla form and calyx division, with descriptions of Symphytum officinale and locally relevant lookalikes.
Use a combination of vegetative and reproductive characters to distinguish Symphytum officinale from Symphytum asperum and Symphytum × uplandicum; flower colour alone is insufficient.
Treat a detached root, dried leaf or processed material as requiring provenance or a suitable authentication method rather than assuming whole-plant visual identification remains possible.
Scope
+ Species identification supported by botanical observations and determination history
+ Individual plants, preserved specimens and populations identified or provisionally identified as Symphytum officinale
+ Growth form, developmental stage, flowering, fruiting and vegetative persistence
+ Growing conditions, establishment, spread and cultivation history
+ Plant-part identity and evidence relevant to handling or proposed use
- Other Symphytum species and hybrids, including Symphytum × uplandicum
- The genus Symphytum and the family Boraginaceae as complete taxonomic models
- Manufactured comfrey extracts, ointments, supplements and their formulations
- Clinical treatment decisions, efficacy claims and patient-specific advice
- Pyrrolizidine alkaloids as chemical substances
- Whole-garden management and ecosystem-wide conservation assessments
Characteristics
- Taxonomic determination
- unidentified Symphytum | provisional S. officinale | confirmed S. officinale | hybrid suspected | identification disputed Controls whether species-specific observations and actions can be applied.
- Identification evidence
- Links to voucher, photographs, identification key, determiner and determination date Makes identification reviewable when related comfreys are present.
- Leaf decurrence and stem wings
- Observed extent and continuity along specified stem internodes, with images Provides evidence for distinguishing similar Symphytum taxa.
- Floral morphology
- Corolla and calyx dimensions in mm, with shape, colour and maturity recorded Supports a keyed determination using multiple floral characters.
- Developmental stage
- emerging | vegetative | flowering | fruiting | seasonally senescent | dead | uncertain Determines which identification characters and management actions are available.
- Plant or patch extent
- Plant height in cm; occupied patch area in m²; observation date Supports repeatable assessment of growth and local expansion.
- Root and crown integrity
- intact | divided | fragmented | damaged | decaying | unexamined Connects disturbance and propagation history to subsequent regrowth.
- Growing-site moisture
- dry | moist | seasonally waterlogged | persistently waterlogged | unrecorded, with observation method Provides context for establishment and changes in plant condition.
- Origin and establishment
- planted | escaped from cultivation | apparently spontaneous | unknown Separates observed establishment history from assumptions about regional native status.
- Material and proposed use
- Plant part linked to collection event and intended action Prevents evidence about one plant part or preparation from being applied indiscriminately to another.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 15 findings · 27 questions.
Species identity Establish whether the observed comfrey belongs to Symphytum officinale.
Shared common names and similar congeners make unsupported species assignment a central failure mode.
Taxonomic reference
Anchor the name and its application to an explicit taxonomic treatment.
Name and determination
Record the taxonomic reference and evidence behind each identification without treating a nursery label as conclusive.
- Which taxonomic treatment defines Symphytum officinale for this determination? definition
- Who identified the plant, when, and from which specimen or observations? provenance
Lookalike separation
Assess characters that separate this species from other comfreys and suspected hybrids.
Diagnostic character combination
Combine leaf decurrence, stem wings and reproductive characters rather than relying on common name or flower colour.
- What leaf-decurrence, stem-wing, corolla and calyx characters were observed on mature material? measurement
- Which observations distinguish this plant from Symphytum asperum and Symphytum × uplandicum under the selected key? boundary
- What additional evidence is required if vegetative and floral characters give conflicting determinations? action
Growth and persistence Describe seasonal development and the relationship between above-ground shoots and persistent below-ground structures.
The condition of visible shoots alone cannot establish whether a comfrey plant remains capable of regrowth.
Seasonal development
Track emergence, vegetative growth, flowering, fruiting and senescence.
Dated developmental state
Interpret plant condition through repeated observations with local seasonal context.
- Which developmental stages are present, and on what observation dates? measurement
- What evidence distinguishes seasonal shoot loss from damage or death of the whole plant? boundary
Root, crown and regrowth
Connect cutting, division and disturbance to persistence of the recorded plant or patch.
Disturbance and recovery
Record below-ground disturbance and observed recovery without assuming that removal of shoots eliminates the plant.
- Were crowns or roots cut, divided, moved or left in disturbed soil? provenance
- Where and when did regrowth occur relative to the recorded disturbance? measurement
- What follow-up observations are needed before a removal attempt can be judged complete? action
Site and population Locate plants within their growing conditions and distinguish establishment from subsequent spread.
Cultivated occurrence, spontaneous establishment and local expansion require different evidence and management decisions.
Growing conditions
Relate observed performance to moisture, light, soil and site disturbance.
Site-linked condition
Keep measured growing conditions separate from inferred causes of poor or vigorous growth.
- What moisture, light and soil conditions accompany the observed plant condition? measurement
- Which observations support a cultivation adjustment, and which possible causes remain unresolved? action
Establishment and expansion
Record origin, spatial extent and evidence for recruitment or vegetative spread.
Population origin and change
Distinguish planting history, observed spread mechanism and regional occurrence status.
- What records establish whether this occurrence was planted, escaped or of unknown origin? provenance
- How has occupied area changed, and what evidence separates seedlings from regrowth associated with roots or crowns? measurement
- Which regional authority supports any native, introduced or invasive designation applied here? boundary
Material and use assessment Preserve plant-part identity and establish the evidence needed for collection, handling and proposed uses.
Evidence concerning comfrey material depends on its identity, part and preparation; it cannot be transferred automatically to every use of the living species.
Collection and authentication
Maintain traceability when material becomes detached from an identifiable plant.
Traceable plant material
Link collected leaves, roots or other parts to the source plant and its determination.
- Which identified plant, plant part, collection date and processing history does this material come from? provenance
- Can the material still be authenticated morphologically, or does its condition require another method? boundary
Use-specific evidence
Separate botanical identity from evidence supporting a particular exposure or application.
Proposed use review
Require sources specific to the proposed material and use, including assessment of pyrrolizidine alkaloids where relevant.
- What use, plant part, preparation and exposure route are proposed? definition
- Which authoritative evidence addresses pyrrolizidine alkaloids and other relevant hazards for that material and use? provenance
- Does the proposed action require a separate product, toxicology or clinical assessment before proceeding? 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.
- Verify native-range boundaries and regional taxonomic treatments against a botanical authority.
- Agricultural claims and named cultivars attributed broadly to comfrey often concern Symphytum × uplandicum rather than this species.
- Height is approximate; chemical composition, medicinal evidence and regulatory status require species-, preparation- and jurisdiction-specific checking.
- Which of these check these first hold for the sense of Symphytum officinale 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 - Symphytum officinale L. - The author abbreviation L. identifies Linnaeus as the author of the botanical name.
- Which of these identifiers and schemes hold for the sense of Symphytum officinale this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Cultivated as a garden plant that provides flowers visited by bees.
- Leaves are used as mulch, compost material and in liquid plant feeds.
- Historically used in herbal preparations, including poultices; traditional use does not establish safety or efficacy.
- Which of these real-world use hold for the sense of Symphytum officinale 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 - 0.3-1.2 - m
- Which of these typical measurements hold for the sense of Symphytum officinale 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.
- Contains pyrrolizidine alkaloids associated with liver toxicity, making ingestion a significant hazard.
- Can regenerate from root fragments, making established plants difficult to remove.
- Confusion with other comfrey species and hybrids can invalidate identification-dependent claims about cultivation, chemistry or medicinal use.
- Which of these failure modes and hazards hold for the sense of Symphytum officinale 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 and western Asia and introduced beyond that range.
- Often grows in moist grassland, ditches and waterside habitats; its local abundance depends on moisture and disturbance.
- Which of these regional variation hold for the sense of Symphytum officinale 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.
- Symphytum - The genus contains multiple comfrey species; Symphytum officinale is one species within it.
- Symphytum × uplandicum - Russian comfrey is the hybrid of Symphytum officinale and Symphytum asperum; it is not simply another name for common comfrey.
- Symphytum asperum - Rough comfrey is a separate species with notably bristly growth and leaves that do not extend down the stem into the conspicuous wings typical of common comfrey.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Symphytum officinale this model covers, and on what evidence? provenance
What the second pass must settle
- Which taxonomic treatment should govern infraspecific variation and the boundary between Symphytum officinale and closely related or hybrid material?
- Which regional diagnostic key provides the most reliable character combination, and when is expert or laboratory confirmation necessary?
- What locally supported seasonal observations and regrowth evidence should determine cultivation and removal follow-up intervals?
- Which authoritative regional sources establish distribution, native or introduced status, and any management restrictions?
- What evidence establishes variation in pyrrolizidine alkaloids by plant part and preparation, and which proposed uses require separate specialist assessment?