Trapa natans
E1016492
Trapa natans, commonly known as water chestnut, is an aquatic plant species characterized by its floating rosettes of leaves and hard, horned fruits, often considered invasive in freshwater ecosystems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Trapa natans canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T13016506 — 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: Trapa natans Context triple: [Trapaceae, notableSpeciesGenus, Trapa natans]
-
A.
Lemna
Lemna is a genus of tiny free-floating aquatic plants, commonly known as duckweeds, that form dense mats on the surface of still or slow-moving freshwater.
-
B.
Pistia stratiotes
Pistia stratiotes is a free-floating freshwater aquatic plant, commonly known as water lettuce, recognized for its rosette of velvety leaves and its role as an invasive species in many warm regions.
-
C.
Eichhornia
Eichhornia is a genus of aquatic flowering plants in the water hyacinth family, best known for species that often become invasive in freshwater habitats.
-
D.
Callitriche stagnalis
Callitriche stagnalis is a small, aquatic flowering plant commonly found in still or slow-moving freshwater habitats across temperate regions.
-
E.
Nelumbo nucifera
Nelumbo nucifera, commonly known as the sacred lotus, is an aquatic flowering plant revered in many Asian cultures for its large, showy blossoms and symbolic association with purity and spiritual enlightenment.
- 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: Trapa natans Target entity description: Trapa natans, commonly known as water chestnut, is an aquatic plant species characterized by its floating rosettes of leaves and hard, horned fruits, often considered invasive in freshwater ecosystems.
-
A.
Lemna
Lemna is a genus of tiny free-floating aquatic plants, commonly known as duckweeds, that form dense mats on the surface of still or slow-moving freshwater.
-
B.
Pistia stratiotes
Pistia stratiotes is a free-floating freshwater aquatic plant, commonly known as water lettuce, recognized for its rosette of velvety leaves and its role as an invasive species in many warm regions.
-
C.
Eichhornia
Eichhornia is a genus of aquatic flowering plants in the water hyacinth family, best known for species that often become invasive in freshwater habitats.
-
D.
Callitriche stagnalis
Callitriche stagnalis is a small, aquatic flowering plant commonly found in still or slow-moving freshwater habitats across temperate regions.
-
E.
Nelumbo nucifera
Nelumbo nucifera, commonly known as the sacred lotus, is an aquatic flowering plant revered in many Asian cultures for its large, showy blossoms and symbolic association with purity and spiritual enlightenment.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
aquatic plant species
ⓘ
flowering plant ⓘ invasive species ⓘ |
| commonName |
water caltrop
ⓘ
water chestnut ⓘ |
| consideredInvasiveIn |
North America
ⓘ
parts of Europe ⓘ |
| dispersalMethod |
human-mediated spread
ⓘ
water dispersal of fruits ⓘ |
| ecologicalImpact |
decreases dissolved oxygen levels
ⓘ
displaces native aquatic vegetation ⓘ forms dense surface mats ⓘ reduces light penetration in water ⓘ |
| family | Lythraceae ⓘ |
| flowerColor | white ⓘ |
| floweringSeason | summer ⓘ |
| fruitCharacteristic | horned fruits ⓘ |
| fruitType | hard nut-like fruit ⓘ |
| genus | Trapa ⓘ |
| growthForm | free-floating rosette ⓘ |
| habitat |
freshwater ecosystems
ⓘ
lakes ⓘ ponds ⓘ slow-moving rivers ⓘ |
| introducedRange |
Australia
ⓘ
North America ⓘ |
| kingdom | Plantae ⓘ |
| leafArrangement | floating rosettes ⓘ |
| leafType | triangular floating leaves ⓘ |
| lifeForm | annual plant ⓘ |
| management |
biological control research
ⓘ
chemical control ⓘ mechanical removal ⓘ |
| nativeRange |
Africa
ⓘ
Eurasia ⓘ |
| order | Myrtales ⓘ |
| photosyntheticPathway | C3 ⓘ |
| reproduction |
by fruits sinking to sediment
ⓘ
by seeds ⓘ |
| rootType | submerged roots ⓘ |
| seedEdibility | edible when cooked ⓘ |
| taxonRank | species ⓘ |
| threat |
biodiversity loss in invaded waters
ⓘ
navigation hindrance ⓘ recreational interference ⓘ |
| uses | human food (seeds) in some regions ⓘ |
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: Trapa natans Description of subject: Trapa natans, commonly known as water chestnut, is an aquatic plant species characterized by its floating rosettes of leaves and hard, horned fruits, often considered invasive in freshwater ecosystems.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.