Opuntia ficus-indica

Species assignment

Record the observations, identification reference and reviewer supporting or challenging an O. ficus-indica assignment.

1. Which observed pad, surface, areole and reproductive characters distinguish this specimen from locally occurring O. robusta, O. stricta, O. monacantha or O. tomentosa? definition
2. Which missing or conflicting characters require the identification to remain provisional? boundary

Material provenance

Associate cultivar claims with accession records and the actual route by which the plant was propagated.

1. Which supplier, accession or parent-plant record supports the cultivar name and intended fruit, vegetable, fodder or host-plant use? provenance
2. Was this plant raised from a cutting or seed, and what evidence supports continuity with the named parent material? provenance

Organ continuity and support

Record pad connections, age classes, rooting and load-bearing damage before removal or propagation.

1. Which pads support new growth or fruit, and where are cracks, weak joints or unsupported branches present? measurement
2. When a pad detaches or roots independently, should it be tracked as a propagule or as a new plant linked to its parent? boundary

Hydration and stress assessment

Keep observed symptoms separate from explanations involving drought, saturation, temperature or root damage.

1. How have pad thickness and firmness changed alongside measured root-zone moisture, drainage and temperature? measurement
2. What evidence supports watering, improving drainage or protecting the plant, and which observation will show whether that action helped? action

Fruit development and readiness

Relate flower counts, fruit retention and maturity observations to the cultivar and intended harvest.

1. For each flowering cohort, what proportion sets and retains fruit, and what evidence identifies the causes of losses? measurement
2. Which cultivar-specific colour, firmness and soluble-solids observations justify harvesting this fruit for its intended use? action

Removal and establishment choice

Record selection criteria and consequences for the donor plant and any resulting propagule.

1. What age, dimensions, health and attachment position make this pad suitable for the proposed use? measurement
2. If it is selected for propagation, what evidence of wound condition, rooting readiness and donor health is required before planting? action

Biotic damage assessment

Separate observed colonies, lesions and collapse from confirmed causes and from intentional host-plant management.

1. What sampling or expert identification distinguishes a suspected Dactylopius opuntiae infestation from Dactylopius coccus culture or another cause? definition
2. How extensive and progressive is the damage, and what diagnosis supports isolation, treatment or removal of affected pads? action

Handling and harvest eligibility

Record spines, glochids, deterioration and relevant treatment history before selecting handling or use.

1. Where are large spines and glochids present on the pads or fruit being handled, including material labelled spineless? measurement
2. What handling method and evidence about damage, contamination and prior treatments are required before this material enters its intended use? action

Spread evidence

Separate a planted specimen from independently establishing offspring or fragments.

1. Where are newly rooted pads or seedlings appearing relative to parent plants, discarded material and cultivation boundaries? measurement
2. What evidence distinguishes intentional planting from vegetative escape or seed-derived recruitment? provenance

Movement and removal decision

Make planting, transport and removal conditional on location, identification and management purpose.

1. Which current local authority or land-management requirement applies to planting, moving or removing this identified material? provenance
2. How will removed pads and fruit be contained, and what follow-up inspection will establish whether regrowth or recruitment continues? action

Kinds and varieties

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Spineless vegetable-nopal (nopal verdura) cultivars grown for young cladodes
• Spiny or semi-spiny traditional landraces retained as living fences or in feral stands
• Yellow- or white-fleshed fruit cultivars (gialla/blanca types)
• Red- to purple-fleshed fruit cultivars (rossa/sanguigna types)
• Dual-purpose forage cultivars managed as drought fodder
• Cochineal-host plantings grown for Dactylopius coccus rather than food
• Sicilian fruit landraces (Surfarina, Sanguigna, Muscaredda and related Etna types)
• Central Mexican nopalito landraces (Milpa Alta and related vegetable types)

1. Which of these kinds and varieties hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Identifiers and schemes

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Scientific name (IPNI/POWO authorship) - Opuntia ficus-indica (L.) Mill. - Basionym Cactus ficus-indica L.; Miller transferred it to Opuntia.
• Wikidata - Q144412 - Item for the species as commonly treated in biodiversity databases.
• NCBI Taxonomy - 3714 - Taxon identifier used in sequence databases.
• ITIS TSN - 19729 - Integrated Taxonomic Information System taxonomic serial number.
• USDA PLANTS - OPFI - Plants Database symbol for Opuntia ficus-indica.
• EPPO plant code - OPUFI - EPPO Global Database code used in plant-health lists.

1. Which of these identifiers and schemes hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Standards and regulation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• CITES Appendix II listing of Cactaceae, with annotations that exempt many artificially propagated Opuntia (subgenus Opuntia) cultivars from permit controls - CITES.
• Protected Designation of Origin (PDO) 'Ficodindia dell'Etna' for cactus pear fruit from defined Etna communes - European Union quality scheme.
• National Environmental Management: Biodiversity Act listing of Opuntia ficus-indica as an invasive alien species, with control obligations - Republic of South Africa.
• Plant-health quarantine and surveillance for the cactus moth Cactoblastis cactorum on Opuntia hosts - USDA APHIS and other national plant-protection organisations.
• National quality specifications for fresh nopal cladodes and cactus pear as horticultural produce - Mexican Secretaría de Economía / agriculture standards system (NMX/NOM series for nopal and tuna).

1. Which of these standards and regulation hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Real-world use

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Harvested as fresh fruit (tuna, cactus pear, ficodindia, figue de Barbarie) in Mexico, the Mediterranean, Chile, Argentina, and California.
• Young cladodes sold as the vegetable nopal/nopalitos, especially in central Mexican markets and as a staple around Mexico City (Milpa Alta).
• Cut-and-carry or browsed drought fodder for cattle, sheep, and goats in semi-arid Mexico, Brazil, North Africa, and the Horn of Africa.
• Host plant for farmed cochineal (Dactylopius coccus) to produce carmine dye.
• Planted as living fences, erosion-control hedges, and nurse plants on degraded dryland soils.
• Processed into jams, juices, juices concentrates, and seed oil; glochids and spines make postharvest handling a distinct packing-house step.

1. Which of these real-world use hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Typical measurements

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Mature plant height - 2-5 (occasionally to ~7) - m
• Cladode length - 30-60 - cm
• Fresh fruit mass - 100-200 - g
• Somatic chromosome number - 2n = 88 (octoploid; some counts 66) - chromosomes
• Cladode water content - 88-95 - % fresh mass
• Fruit soluble solids - 12-16 - °Brix
• Rainfed annual precipitation for commercial stands - 300-600 - mm year−1
• Frost damage threshold (mature plants) - about −5 to −10 - °C

1. Which of these typical measurements hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Failure modes and hazards

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Glochids (and spines on non-spineless forms) cause mechanical injury, dermatitis, and oral irritation; they also contaminate fruit if not singed or brushed off.
• Calcium-oxalate raphides in cladodes irritate mucosa if pads are eaten raw or under-cooked.
• Cactus moth (Cactoblastis cactorum) can collapse stands; cochineal scale is a crop pest where dye is not the product.
• Mediterranean fruit fly and other tephritids infest ripe fruit in producing regions.
• Soft rot and cladode lesions after freeze, sunscald, or mechanical wounding.
• Invasiveness: feral plants form dense thickets that exclude forage and native vegetation, historically a rangeland crisis in South Africa and Australia.
• Spiny types injure livestock; spineless types are over-browsed if unfenced.

1. Which of these failure modes and hazards hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Regional variation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Mexico treats the plant primarily as a vegetable (nopal) plus fruit (tuna), with named nopalito landraces and a large peri-urban industry around Mexico City.
• Sicily, Malta, and the Maghreb treat it primarily as a fruit crop (ficodindia / figue de Barbarie); Etna fruit has a PDO and local names track pulp colour.
• In Tigray and neighbouring Horn of Africa districts the plant is both famine food and forage (often called beles) and is also regarded as an invasive coloniser of rangeland.
• South Africa and Australia historically managed it as a declared weed with biological control, even while some spineless clones remain in fodder use.
• The English name 'Indian fig' is a Columbian-exchange misnomer (West Indies), not an indication of South Asian origin.

1. Which of these regional variation hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

• Opuntia stricta (erect prickly pear) - Smaller, typically spiny cladodes and a more shrubby habit; a major invasive in Australia and Africa, not the large nearly spineless cultigen grown as nopal/cactus pear. Ploidy is usually lower (often tetraploid) than cultivated O. ficus-indica.
• Opuntia megacantha / O. streptacantha (wild Mexican prickly pears) - Progenitor or sister wild forms: consistently heavily spined, often more arborescent-shrubby wild habit; cultivated O. ficus-indica is the largely spineless, selected cultigen from this complex, not a clean morphological species.
• Opuntia cochenillifera (nopalito / cochineal cactus, formerly Nopalea) - Flowers more tubular with exserted stamens (nopalea-type) rather than rotate Opuntia flowers; historically the preferred cochineal host. Cladodes and fruit are smaller than typical cactus-pear cultivars.
• Opuntia engelmannii and related North American natives - Native spiny shrubby prickly pears with different areole/spine patterning and usually smaller fruit; they lack the tree-like, large-pad, near-spineless cultigen habit of orchard O. ficus-indica.
• Selenicereus/Hylocereus undatus (pitahaya / dragon fruit) - A climbing, ribbed, non-padded cactus; fruit is a large scaly berry with leafy bracts, not an opuntioid tuna with glochid-bearing areoles. Confusion is market-name only ('cactus fruit').
• Austrocylindropuntia and other cylindrical opuntioids - Stems are terete segments, not flattened cladodes; a hand-lens or even a glance at pad versus cylinder separates them from O. ficus-indica.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of Opuntia ficus-indica this model covers, and on what evidence? provenance