St Helena tree fern
E419498
The St Helena tree fern is a rare, ancient fern species endemic to the island of Saint Helena, notable for its tall, palm-like trunk and ecological importance in the island’s cloud forest habitats.
All labels observed (1)
| Label | Occurrences |
|---|---|
| St Helena tree fern canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4183123 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: St Helena tree fern Context triple: [Diana’s Peak, hasEndemicSpecies, St Helena tree fern]
-
A.
Howea forsteriana
Howea forsteriana is a species of palm tree, commonly known as the Kentia palm, prized worldwide as an elegant indoor ornamental plant.
-
B.
Cyathea
Cyathea is a large genus of tropical and subtropical tree ferns known for their tall trunks and feathery fronds, found in regions such as New Zealand, the Americas, and Southeast Asia.
-
C.
Howea belmoreana
Howea belmoreana is a palm species native to Australia’s Lord Howe Island, valued worldwide as an ornamental indoor and landscape plant.
-
D.
Coco de Mer palm
The Coco de Mer palm is a rare and iconic palm tree native to the Seychelles, famed for producing the largest and most uniquely shaped seeds in the plant kingdom.
-
E.
Alsophila dealbata
Alsophila dealbata is a tree fern species native to New Zealand, best known as the iconic “silver fern” symbol widely used in the country’s national identity and sports teams.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: St Helena tree fern Target entity description: The St Helena tree fern is a rare, ancient fern species endemic to the island of Saint Helena, notable for its tall, palm-like trunk and ecological importance in the island’s cloud forest habitats.
-
A.
Howea forsteriana
Howea forsteriana is a species of palm tree, commonly known as the Kentia palm, prized worldwide as an elegant indoor ornamental plant.
-
B.
Cyathea
Cyathea is a large genus of tropical and subtropical tree ferns known for their tall trunks and feathery fronds, found in regions such as New Zealand, the Americas, and Southeast Asia.
-
C.
Howea belmoreana
Howea belmoreana is a palm species native to Australia’s Lord Howe Island, valued worldwide as an ornamental indoor and landscape plant.
-
D.
Coco de Mer palm
The Coco de Mer palm is a rare and iconic palm tree native to the Seychelles, famed for producing the largest and most uniquely shaped seeds in the plant kingdom.
-
E.
Alsophila dealbata
Alsophila dealbata is a tree fern species native to New Zealand, best known as the iconic “silver fern” symbol widely used in the country’s national identity and sports teams.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
fern species
ⓘ
fern species ⓘ pteridophyte ⓘ vascular plant ⓘ |
| biogeographicRealm | Afrotropical ⓘ |
| class |
Polypodiidae
ⓘ
surface form:
Polypodiopsida
|
| climatePreference | humid ⓘ |
| commonNameOf |
Dicksonia
ⓘ
surface form:
Dicksonia arborescens
|
| conservationAction |
cultivation in botanical gardens
ⓘ
habitat protection on Saint Helena ⓘ |
| conservationStatus | endangered ⓘ |
| discoveredOn | island of Saint Helena NERFINISHED ⓘ |
| distribution | high elevation areas of Saint Helena ⓘ |
| ecologicalRole |
contributes to moisture retention in forest
ⓘ
provides habitat for epiphytes ⓘ structural component of cloud forest canopy ⓘ |
| endemicTo | Saint Helena ⓘ |
| family | Dicksoniaceae ⓘ |
| genus | Dicksonia ⓘ |
| growthForm | tree fern ⓘ |
| habitat |
cloud forest
ⓘ
moist ravines ⓘ montane forest ⓘ |
| importance |
iconic species of Saint Helena cloud forests
ⓘ
key element of native vegetation on Saint Helena ⓘ |
| IUCNRedListCategory | Endangered ⓘ |
| kingdom | Plantae ⓘ |
| leafArrangement | crown of fronds at top of trunk ⓘ |
| leafType | fronds ⓘ |
| lifespan | long-lived perennial ⓘ |
| lightPreference | shade ⓘ |
| nativeRange |
Saint Helena
ⓘ
surface form:
South Atlantic Ocean island of Saint Helena
|
| notableFeature |
large arching fronds
ⓘ
tall palm-like trunk ⓘ |
| order | Cyatheales ⓘ |
| photosyntheticPathway | C3 ⓘ |
| phylum | Polypodiophyta ⓘ |
| reproduction | spores ⓘ |
| taxonRank | species ⓘ |
| threat |
grazing by introduced animals
ⓘ
habitat loss ⓘ invasive plant species ⓘ |
| trunkType | erect woody trunk ⓘ |
| typicalHeight | up to about 5–6 metres ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: St Helena tree fern Description of subject: The St Helena tree fern is a rare, ancient fern species endemic to the island of Saint Helena, notable for its tall, palm-like trunk and ecological importance in the island’s cloud forest habitats.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.