{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T14:24:28Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 1,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-05T17:00:00Z",
      "ingestedAt": "2026-10-05T13:29:18+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "revisions": [
      {
        "at": "2026-10-08T18:47:13+00:00",
        "engine": "codex",
        "fields": [
          "definition"
        ],
        "answering_review": "1514d85c8e2a69bb78ca99eac64d155c9d295d4cc49e05084754685c0e29d3f1"
      }
    ],
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-08T18:54:36+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q134267",
    "registryId": "vr.tr.plant-stem",
    "name": "plant stem",
    "version": "0.2.0-wave.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.LIV"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q134267/",
  "model": {
    "registry_id": "vr.tr.plant-stem",
    "name": "plant stem",
    "purpose": "Let an agent explain plant stems by structure, function, types and modifications, and support gardening, propagation and plant identification.",
    "definition": "A structural axis of a vascular plant, whether main or lateral, that bears leaves, buds and flowers and conducts water, nutrients and sugars, either herbaceous or woody; modified stems include rhizomes such as galangal, tubers, stolons, corms and caudices.",
    "what_it_is_for": "Support, transport and storage in plants.",
    "affordances": [
      "identify stem types and modifications",
      "explain xylem and phloem transport",
      "propagate plants from stem cuttings",
      "recognise stem problems in plants"
    ],
    "distinguishing_features": [
      "Bears leaves and buds",
      "Has nodes and internodes",
      "Conducts water and sugars",
      "Can store food"
    ],
    "appearance": "Green or woody axes with nodes, internodes, buds and leaves.",
    "visual_identification": [
      "Nodes and buds",
      "Rhizomes and tubers as underground stems",
      "Roots lack nodes and leaves"
    ],
    "physical_properties": [
      {
        "quantity": "Stem length",
        "unit": "metres",
        "typical_range": "",
        "note": "Measure along the stem axis between specified endpoints because dimensions vary widely with species and growth stage."
      },
      {
        "quantity": "Stem diameter",
        "unit": "millimetres",
        "typical_range": "",
        "note": "Measure across the stem at a recorded position and record multiple widths when the cross section is irregular."
      },
      {
        "quantity": "Fresh mass",
        "unit": "grams",
        "typical_range": "",
        "note": "Weigh a defined stem sample before drying and record its sampling boundaries and hydration condition."
      }
    ],
    "families_and_kinds": [
      "herbaceous stems",
      "woody stems",
      "rhizomes and stolons",
      "tubers and corms",
      "tillers and caudices"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "vegetative organ",
        "why": "category"
      },
      {
        "relation": "contains",
        "target": "xylem and phloem",
        "why": "tissues"
      },
      {
        "relation": "includes",
        "target": "potato tuber",
        "why": "modified stem"
      },
      {
        "relation": "is related to",
        "target": "fruit tree",
        "why": "woody plant"
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "Plant health rules for moving plant material"
    ],
    "failure_modes_and_hazards": [
      "Stem rots and diseases",
      "Spreading invasive plants from stem fragments",
      "Sap irritation from some species"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Identify and describe plant stems and their modified forms.",
        "Report stem damage, disease or pests to growers."
      ],
      "must_not": [
        "Cut or damage stems of protected or wild plants without authority.",
        "Identify stems or tubers as edible without certainty.",
        "Move plant material across borders against plant health rules."
      ],
      "requires_human": [
        "Harvesting rhizomes or tubers from wild populations."
      ]
    },
    "ethics": {
      "considerations": [
        "Misidentifying edible stems and tubers can poison people.",
        "Wild plants and their habitats can be harmed by careless harvesting."
      ],
      "affected_parties": [
        "Foragers and eaters",
        "Growers",
        "Wild plant populations"
      ]
    },
    "owners": {
      "steward": "The owner of the land or crop; nature authorities for protected species.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q134267: plant stem",
      "url": "https://www.wikidata.org/wiki/Q134267",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Plant stem",
      "url": "https://en.wikipedia.org/wiki/Plant_stem",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "structure",
        "name": "Structure",
        "description": "Anatomy.",
        "rationale": "Structure explains function.",
        "layers": [
          {
            "id": "parts",
            "name": "Parts",
            "description": "Nodes and tissues.",
            "findings": [
              {
                "id": "parts-finding",
                "name": "Parts",
                "description": "Stem parts.",
                "questions": [
                  {
                    "text": "What are nodes, internodes, xylem and phloem in this stem?",
                    "kind": "definition"
                  },
                  {
                    "text": "How does woody growth differ?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "transport",
            "name": "Transport",
            "description": "Water and sugars.",
            "findings": [
              {
                "id": "transport-finding",
                "name": "Transport",
                "description": "Transport.",
                "questions": [
                  {
                    "text": "How do stems move water up and sugars around the plant?",
                    "kind": "definition"
                  },
                  {
                    "text": "What drives the flow?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "types",
        "name": "Types",
        "description": "Modifications.",
        "rationale": "Stems take many forms.",
        "layers": [
          {
            "id": "underground",
            "name": "Underground",
            "description": "Rhizomes and tubers.",
            "findings": [
              {
                "id": "underground-finding",
                "name": "Underground",
                "description": "Underground stems.",
                "questions": [
                  {
                    "text": "Is this structure a rhizome, tuber, corm or root?",
                    "kind": "definition"
                  },
                  {
                    "text": "How can it be told apart?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "grasses",
            "name": "Grasses",
            "description": "Tillers.",
            "findings": [
              {
                "id": "grasses-finding",
                "name": "Grasses",
                "description": "Tillers.",
                "questions": [
                  {
                    "text": "What are tillers in grasses and cereals?",
                    "kind": "definition"
                  },
                  {
                    "text": "How do they affect yield?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "gardening",
        "name": "Gardening",
        "description": "Propagation and care.",
        "rationale": "Stems can propagate plants.",
        "layers": [
          {
            "id": "cuttings",
            "name": "Cuttings",
            "description": "Stem cuttings.",
            "findings": [
              {
                "id": "cuttings-finding",
                "name": "Cuttings",
                "description": "Stem cuttings.",
                "questions": [
                  {
                    "text": "How can this plant be propagated from stem cuttings?",
                    "kind": "action"
                  },
                  {
                    "text": "When is the best time?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "problems",
            "name": "Problems",
            "description": "Stem damage.",
            "findings": [
              {
                "id": "problems-finding",
                "name": "Problems",
                "description": "Stem problems.",
                "questions": [
                  {
                    "text": "What is causing this stem rot, canker or damage?",
                    "kind": "definition"
                  },
                  {
                    "text": "What treatment do horticultural sources suggest?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "safety",
        "name": "Safety",
        "description": "Invasives and sap.",
        "rationale": "Some stems cause problems.",
        "layers": [
          {
            "id": "invasive",
            "name": "Invasive",
            "description": "Invasive plants.",
            "findings": [
              {
                "id": "invasive-finding",
                "name": "Invasive",
                "description": "Invasive plants.",
                "questions": [
                  {
                    "text": "Could stem fragments spread an invasive plant such as knotweed?",
                    "kind": "boundary"
                  },
                  {
                    "text": "What disposal rules apply?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "sap",
            "name": "Sap",
            "description": "Irritant sap.",
            "findings": [
              {
                "id": "sap-finding",
                "name": "Sap",
                "description": "Irritant sap.",
                "questions": [
                  {
                    "text": "Does this plant have irritant or phototoxic sap?",
                    "kind": "provenance"
                  },
                  {
                    "text": "What should be done after skin or eye contact?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should stem modifications be separate entries?",
    "How should botanical glossaries be linked?",
    "How should invasive species be linked?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}