Colocasia esculenta
Enable an agent to recognise Colocasia esculenta, assess a plant or planting lot, and judge suitable cultivation, propagation, harvest or food-use actions from recorded evidence.
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 Colocasia esculenta, assess a plant or planting lot, and judge suitable cultivation, propagation, harvest or food-use actions from recorded evidence.
Colocasia esculenta, commonly called taro, is a herbaceous perennial species in the arum family Araceae, cultivated primarily for its starchy underground corms and cormels and, in some food traditions, its leaves and petioles.
It can be Compare a specimen with a botanical identification key and retain the evidence supporting its identification.; Select traceable planting material and record the organ used for vegetative propagation.; Assess a proposed growing site against accession-specific water and temperature evidence.; Monitor leaf condition and underground organ development to support investigation and harvest decisions.; Separate food-use candidates, propagation material and damaged organs according to documented criteria.; Route a proposed food use to organ-specific preparation guidance while preserving uncertainty about identity and suitability..
Distinguishing features
Inspect the attachment of the petiole to the underside of the leaf blade: peltate attachment supports identification, but must be combined with other characters.
Use leaf shape, venation, petiole attachment and underground organs together in a botanical key to distinguish Colocasia esculenta from Alocasia and Xanthosoma lookalikes.
Record the central corm and associated cormels or stolons; do not infer species or cultivar from a marketed underground organ alone.
Require species-level evidence beyond the common names taro and elephant ear, which do not uniquely identify this registry entry.
Treat ornamental colour and leaf posture as supporting observations rather than decisive species tests.
Scope
+ Species identification and distinction from other plants called taro or elephant ear
+ Cultivar or accession identity and planting-material provenance
+ Leaves, petioles, corms, cormels, roots and reproductive structures
+ Development, propagation, growing conditions and plant health
+ Harvest readiness and organ-specific suitability for intended use
- Processed taro foods, recipes and finished-product specifications
- Farm operations, irrigation infrastructure and land ownership
- Other Colocasia species and superficially similar Alocasia or Xanthosoma plants
- Pathogens and pests as independently modelled organisms
- Isolated calcium oxalate and other chemical constituents as substances
Characteristics
- Taxonomic identification
- Colocasia esculenta confirmed | provisional | unresolved | other taxon Controls whether this model applies and prevents common-name substitutions.
- Cultivar or accession provenance
- Link to named cultivar, accession, supplier or parent planting lot; unknown allowed Supports traceability where appearance, growth habit and intended use differ.
- Petiole attachment
- Peltate | attached at basal margin or sinus | unclear Provides an observable identification character for comparison with lookalikes.
- Underground organ architecture
- Observed central corm, cormels and stolons, with presence and relative development recorded separately Informs propagation choices and the expected harvest component.
- Corm dimensions and mass
- Length and maximum diameter in mm; fresh mass in g; organ and sampling date required Supports comparison of development and harvest outcomes without assuming a universal size threshold.
- Developmental condition
- Establishing | vegetative growth | underground organ enlargement | flowering | senescing | dormant or quiescent | uncertain Makes planting, propagation and harvest decisions conditional on observed development.
- Root-zone water regime
- Drained moist soil | intermittently saturated | continuously flooded | water-deficient; observation period required Allows growing conditions to be assessed against evidence for the particular accession and production system.
- Root-zone temperature
- Degrees Celsius, with depth, timestamp and measurement method Helps interpret establishment, growth interruption and possible cold stress.
- Plant health observations
- Leaf lesions, yellowing, wilting, feeding damage and corm decay recorded by organ, extent and date Separates observed symptoms from an unconfirmed pest or disease diagnosis.
- Organ and intended use
- Corm | cormel | leaf | petiole | whole plant; food | planting material | ornamental | research Prevents suitability for one organ or use from being transferred automatically to another.
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: 5 bundles · 9 layers · 15 findings · 28 questions.
Taro identity and provenance Establish whether the subject belongs to Colocasia esculenta and what is known about its cultivated lineage.
Common names and ornamental appearance can conceal taxonomic ambiguity, while cultivar claims require their own evidence.
Species recognition
Connect an identification to observable botanical characters.
Diagnostic character evidence
Record petiole attachment, leaf venation and underground structures together with the identification reference used.
- Which observed characters and botanical key support identification as Colocasia esculenta? definition
- Which Alocasia, Xanthosoma or other Colocasia alternatives were considered, and what evidence distinguishes them? boundary
Cultivated lineage
Preserve accession identity without equating local names with verified cultivars.
Accession and name traceability
Keep the supplier's name, local crop name, cultivar attribution and parent-lot relationship distinguishable.
- Where did this plant or planting lot originate, and what accession or cultivar documentation accompanied it? provenance
- Does the recorded local name denote a verified cultivar, a crop-use group or simply taro in general? boundary
Taro organs and development Represent the leaf canopy and underground organs as changing parts of the plant.
Identification, propagation and harvest depend on which organs are present and how they are developing.
Leaf and corm architecture
Describe organ arrangement and distinguish the main corm from associated structures.
Underground organ inventory
Record the main corm, cormels, stolons and roots using explicit organ labels and observations.
- Which underground structures are present, and how were cormels distinguished from stolons and roots? definition
- What are the count, dimensions and fresh mass of the main corm and sampled cormels? measurement
Development and propagation
Connect developmental observations to the origin and potential reuse of planting material.
Planting organ and growth stage
Record establishment history, current growth evidence and the condition of potential propagation organs.
- Was the plant established from a corm, cormel, sucker, tissue-cultured plant or another documented source? provenance
- Which observations support its current developmental stage rather than an estimate based only on age? measurement
- Which organs could supply viable planting material, and what health checks are required before selection? action
Taro growing conditions and health Relate the plant's condition to its water regime, thermal environment and observed damage.
Cultivation decisions must distinguish environmental mismatch from pest or disease injury and account for the production system.
Water and temperature fit
Assess actual root-zone conditions against evidence appropriate to the accession.
Growing regime evidence
Record flooding or drainage conditions and temperature exposure without prescribing one regime for every taro accession.
- What root-zone water regime and temperature range has this planting experienced during the recorded period? measurement
- What evidence supports the proposed water regime for this accession and growing site? provenance
- What observed response would justify changing irrigation, drainage or protection from cold? action
Leaf and corm health
Track symptoms in the canopy and underground organs while keeping diagnosis separate.
Symptoms and diagnostic confidence
Document leaf lesions, canopy decline and corm decay with their distribution and supporting diagnostic evidence.
- Which organs show lesions, wilting, feeding damage or decay, and what proportion is affected? measurement
- What examination or test distinguishes suspected taro leaf blight or corm rot from environmental injury? provenance
- Should affected material be withheld from propagation pending diagnosis? action
Taro harvest and use suitability Determine which organs are candidates for harvest and what evidence is needed for their intended use.
A plant's identity alone does not establish harvest readiness or the suitability of a particular organ for food or propagation.
Organ-specific harvest
Make readiness criteria explicit for corms, cormels and leaves.
Harvest target and readiness
Connect the intended harvested organ to cultivar, developmental evidence and local production objectives.
- Is the intended harvest the main corm, cormels, leaves or planting material? definition
- Which measured organ traits and developmental observations support readiness for that use? measurement
- How would the proposed leaf or corm harvest affect continued growth and retained propagation material? action
Food-use evidence
Link an identified organ to verified suitability and preparation requirements.
Organ-specific preparation boundary
Require evidence addressing acridity and calcium-oxalate-associated irritation before assigning food-use suitability; preparation procedures belong to linked food models.
- What authoritative guidance addresses food use and preparation of this specific organ and cultivated type? provenance
- Which preparation requirements and acceptance criteria must be checked before this material can be assigned to food use? action
- Where does the harvested-organ record hand off to a preparation process or finished-food model? boundary
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.
- The intended sense is the plant species, despite the supplied material-domain code; properties of taro flour, starch, or cooked food require separate qualification.
- Verify cultivar identity and local terminology before assigning a specimen to dasheen or eddoe groups.
- Native-range boundaries, domestication history, quantitative composition, and preparation requirements need source-based checking; no sources were consulted for this recall response.
- Which of these check these first hold for the sense of Colocasia esculenta this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Dasheen types, cultivated principally for a large central corm
- Eddoe types, cultivated principally for smaller lateral cormels
- Which of these kinds and varieties hold for the sense of Colocasia esculenta 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 under the International Code of Nomenclature for algae, fungi, and plants - Colocasia esculenta (L.) Schott - Species name with botanical author citation; belongs to Araceae. Dasheen and eddoe are agricultural groupings whose formal taxonomic treatment varies.
- Which of these identifiers and schemes hold for the sense of Colocasia esculenta this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Corms and cormels prepared as staple carbohydrate foods
- Cooked corms processed into pastes, including Hawaiian poi
- Corms processed into flour and starch
- Leaves and petioles used as vegetables after appropriate preparation
- Cultivated as an ornamental foliage plant
- Which of these real-world use hold for the sense of Colocasia esculenta 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.
- Raw or inadequately prepared tissues can cause marked irritation because they contain needle-shaped calcium oxalate crystals and other contributors to acridity.
- Taro leaf blight, caused by Phytophthora colocasiae, can cause severe crop losses.
- Corm rots can damage planting material and harvested produce.
- Vegetative propagation can perpetuate systemic pathogens in planting material.
- Escaped plants can become invasive in suitable wet habitats outside their native range.
- Which of these failure modes and hazards hold for the sense of Colocasia esculenta this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Pacific cultivation includes extensive local cultivar diversity and both flooded and rainfed production systems.
- Caribbean and other regional usage distinguishes eddoe and dasheen, but these common names do not consistently map to formal botanical varieties.
- Names such as cocoyam and elephant ear can refer to other aroid species as well as taro, making regional common names unreliable identifiers.
- Which of these regional variation hold for the sense of Colocasia esculenta 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.
- Xanthosoma sagittifolium - A separate aroid species also cultivated for edible underground organs; its leaf stalk attaches at the basal notch, whereas taro has peltate leaves with the stalk attached within the blade.
- Ipomoea batatas - Sweet potato belongs to Convolvulaceae and produces storage roots; taro belongs to Araceae and produces corms, which are modified stems.
- Dioscorea species - True yams belong to Dioscoreaceae and are generally climbing plants; taro is a nonclimbing aroid.
- Taro corm - The harvested storage organ is a plant part and food material; Colocasia esculenta names the whole biological species.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Colocasia esculenta this model covers, and on what evidence? provenance
What the second pass must settle
- Which botanical reference and diagnostic character set should govern species confirmation where flowers or underground organs are unavailable?
- How should locally named cultivars and corm-dominant versus cormel-dominant crop types be represented without implying unsupported taxonomic ranks?
- Which accession-specific evidence establishes suitable flooding, drainage and temperature conditions for the intended growing region?
- Which validated, organ-specific guidance establishes preparation requirements and food-use acceptance criteria for the cultivated material?
- Which local evidence and rules determine whether planting or disposal could enable unwanted establishment outside cultivation?