gemma
Enable an agent to recognise a gemma as an asexual reproductive propagule, assess its developmental condition, and choose suitable observation, propagation or containment actions.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 16 findings · 26 questions
Gemma identity Establish the intended biological sense and the evidence that a candidate is a gemma.
Registry sense
Resolve what the registered name denotes before applying biological criteria.
Propagule sense
Treat the botanical interpretation as provisional until the registry's originating record is checked.
- Does the originating registry record identify a vegetative reproductive body or the bivalve genus Gemma? definition
- Which source identifier or original definition supports the selected sense? provenance
Reproductive boundaries
Distinguish gemmae from visually similar bodies using producer-specific developmental evidence.
Specialised propagule
Record why the structure is identified as a gemma rather than relying on size, shape or regeneration alone.
- What developmental or anatomical evidence identifies this body as a specialised vegetative propagule? definition
- What distinguishes it here from a spore, ordinary bud, bulbil or accidental regenerating fragment? boundary
Parent and formation Connect gemmae to the organisms and structures that produce them.
Producer link
Maintain taxonomic and specimen context without treating the gemma as a taxon.
Parent attribution
Link a gemma to its observed parent or explicitly record uncertainty for detached material.
- Which parent specimen and taxon produced this gemma, and how was that attribution established? provenance
- For detached material, what evidence supports parent attribution and what alternatives remain? boundary
Formation architecture
Describe the propagule's position and attachment separately from its supporting structure.
Bearing site
Record where gemmae develop without assuming that every producer forms gemma cups.
- On which parent organ or specialised structure does the gemma form, and how is it attached? definition
- Which visible tissue belongs to the gemma and which belongs to its cup, stalk or parent surface? boundary
Morphology and readiness Record physical features and evidence of maturation or damage.
Diagnostic form
Capture dimensions and structural features under comparable observation conditions.
Form record
Describe the actual gemma rather than importing a familiar liverwort example.
- What are its dimensions, shape and visible cellular organisation at the recorded hydration state? measurement
- Which features match a documented gemma description for the identified producer? provenance
Maturation and integrity
Separate readiness for release from physical condition and demonstrated viability.
Collection readiness
Use observed development and integrity to decide whether collection is appropriate.
- Which producer-specific signs indicate that this gemma is mature enough for collection or natural release? action
- What damage, collapse or contamination is visible, and how was it assessed? measurement
Release and establishment Follow the transition from attached propagule to dispersed body and independently growing successor.
Detachment and transport
Record how gemmae leave their parent and reach a receiving surface.
Release pathway
Distinguish observed natural release from deliberate removal and inferred dispersal.
- Was detachment observed, induced by handling or inferred from the collection location? provenance
- What transport mechanism and movement distance were demonstrated for this producer and setting? measurement
Growth transition
Define and observe the endpoint at which a gemma establishes a growing successor.
Establishment evidence
Record growth conditions and distinguish initial activity from sustained establishment.
- Under what substrate, moisture, light and temperature conditions did growth begin, and after how long? measurement
- What observable endpoint transfers tracking from the gemma to an established organism? boundary
Propagation and traceability Support controlled handling, viability testing and attribution of propagated material.
Handling and viability
Choose handling procedures supported for the producer and assess their outcomes.
Validated handling
Treat collection, storage and viability conclusions as dependent on a documented method.
- Which collection and storage procedure has evidence of retaining viability for this producer? action
- What assay, observation period and comparison distinguish nonviability from unsuitable growth conditions? measurement
Cohort and descendant records
Track propagules and successors without confusing their number with the number of genetic lineages.
Lineage and containment
Preserve parent and cohort links through propagation and account for unwanted material.
- Which gemmae and descendants share a documented parent, and is genetic identity inferred or independently tested? provenance
- How will unused gemmae be contained or disposed of to prevent unintended establishment in this setting? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
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.
- Which of these check these first hold for the sense of gemma this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these kinds and varieties hold for the sense of gemma this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of gemma this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of gemma 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.
- Which of these failure modes and hazards hold for the sense of gemma 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.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of gemma this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.LIV
What it is Filled
In its botanical sense, a gemma is a small vegetative propagule that separates from its parent and can develop into a new individual without fertilization, notably in liverworts and mosses.
In scope
- Recognition of a specialised vegetative propagule in the context of its producer taxon
- Gemma morphology, formation site and attachment to the parent
- Maturation, detachment, dispersal and establishment
- Observed integrity, viability and response to propagation conditions
- Parentage and cohort tracking without equating propagule count with genetic diversity
Out of scope
- The bivalve genus Gemma and its member species
- Gemma software models, personal names and gemstones
- Whole-organism taxonomy, native range and conservation assessments except as linked parent-taxon context
- Sexual reproductive structures and seed or spore models beyond identification boundaries
- Detailed anatomy of gemma cups and other supporting parent organs
- General cultivation or ecosystem management beyond actions directly involving gemmae
Why it exists Filled
Enable an agent to recognise a gemma as an asexual reproductive propagule, assess its developmental condition, and choose suitable observation, propagation or containment actions.
Distinguishing features Filled
- Identify a specialised body serving vegetative reproduction; small size or a budlike appearance alone is insufficient.
- Distinguish the propagule from the cup, stalk or other parent structure that bears it.
- Use developmental origin to distinguish it from seeds and reproductive spores; shape alone may be ambiguous.
- Distinguish a regularly produced gemma from an accidentally detached fragment that happens to regenerate.
- Apply producer-specific terminology: neither a cup nor the disc shape familiar from some liverworts is a universal requirement.
What robots and AI may and may not do Filled
Must not
- Collect bryophyte material from protected sites or species without a permit.
- Move propagules between regions where they could establish as invasive populations.
- Confuse the botanical sense with the gemstone or bud senses of the word in records.
- Strip a wild population to obtain propagation material.
Only with a human decision
- Collecting from protected sites or species.
- Releasing cultured material into the wild.
May
- Identify gemmae and gemma cups in bryophyte specimens and describe their role in propagation.
- Culture or propagate bryophytes from gemmae for lawful research, teaching or conservation.
Moral aspects Filled
- Bryophyte populations are small and slow to recover from over-collection.
- Introduced propagules can establish and displace local flora.
Who is affected
- Wild bryophyte populations
- Protected habitats
- Researchers and students
Owners Filled
Steward
Nobody owns wild specimens; protected area authorities and herbaria regulate collection and hold vouchers.
Master systems
- Herbarium specimen databases
- Protected species collection permit records
Links to other meta-models Filled
parent
- Q1968532 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.gemma
- Wikidata: Q2746099 (https://www.wikidata.org/wiki/Q2746099)
Direct properties required Filled
- Producer identity: Linked parent specimen and taxon, identification evidence and confidence
- Formation site: Cup, leaf, thallus, specialised stalk, other documented site, unknown
- Morphology: Observed shape, cellular organisation and diagnostic features under a stated imaging method
- Dimensions: Length, width and thickness in µm or mm, with hydration state and measurement method
- Developmental condition: Forming, mature, initiating growth, established successor, indeterminate
- Attachment condition: Attached, naturally detached, deliberately removed, unknown
- Viability evidence: Untested, growth demonstrated, assay-supported viable, assay-supported nonviable, inconclusive
- Establishment outcome: Number established / number tested and percentage, with conditions, endpoint and observation period
Recognition required Filled
- In some liverworts, gemmae appear as small green discs inside cup-shaped structures on the parent thallus.
- In mosses, gemmae may appear as small detachable bodies on leaves, stems or specialized supporting structures.
- Microscopy may reveal an organized multicellular propagule rather than the single cell typical of a spore.
Capabilities and actions required Filled
- Identify and image candidate gemmae while retaining parent and formation-site context.
- Count and measure gemmae using an explicit individual or cohort sampling unit.
- Collect mature propagules with a producer-appropriate method and record detachment damage.
- Test viability and establishment under documented substrate, moisture, light and temperature conditions.
- Trace propagated descendants to the parent specimen and collection cohort.
- Contain or dispose of unwanted propagules using procedures validated for the producer and setting.
Hazards and failure modes required Filled
- Unintended dispersal can establish unwanted populations outside the intended growing area.
- Transferred propagules can carry associated pests or pathogens into other cultures or habitats.
- Misidentification can compromise propagation records and ecological observations.
Standards and interfaces required Filled
- ISPM 36, Integrated measures for plants for planting, issued by the International Plant Protection Convention, applies when gemmae are traded as planting material.
Context of use required Filled
- Gemmae are encountered when studying vegetative reproduction in liverworts, mosses and other organisms that produce these propagules.
- They are used in propagation and developmental research because they can establish new individuals without fertilization.
Sources Filled
- Wikidata item Q2746099: gemma - identity and sense of the item
- Wikipedia: Gemma (botany) - general description of the item
Open questions
- Does the originating record for vr.tr.gemma confirm the botanical propagule sense rather than the bivalve genus?
- Which producer groups and historical uses of 'gemma' belong within this registry entry?
- Which producer-specific characters reliably distinguish gemmae from bulbils, ordinary buds, spores and regenerating fragments?
- Which maturation, storage and viability criteria have been experimentally validated for the intended producers?
- What establishment endpoint and counting convention should apply when one gemma produces multiple growing axes or connected descendants?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q2746099/spec.json