Toxicodendron rydbergii
E576922
Toxicodendron rydbergii, commonly known as western poison ivy, is a North American shrub that causes allergic skin reactions through contact with its urushiol-containing leaves and stems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Toxicodendron rydbergii canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6084815 — 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: Toxicodendron rydbergii Context triple: [Toxicodendron, containsTaxon, Toxicodendron rydbergii]
-
A.
Toxicodendron pubescens
Toxicodendron pubescens, commonly known as Atlantic poison oak, is a North American shrub noted for its oak-like leaves and skin-irritating, urushiol-containing sap.
-
B.
Toxicodendron vernix
Toxicodendron vernix is a North American shrub or small tree commonly known as poison sumac, notorious for causing severe allergic skin reactions through its urushiol-containing sap.
-
C.
Toxicodendron diversilobum
Toxicodendron diversilobum is a woody shrub or vine native to western North America, commonly known as Pacific poison oak, notorious for causing allergic skin reactions upon contact.
-
D.
Toxicodendron radicans
Toxicodendron radicans is a North American woody vine or shrub commonly known as poison ivy, notorious for causing allergic skin reactions through contact with its urushiol-containing leaves and stems.
-
E.
Toxicodendron
Toxicodendron is a genus of plants best known for species like poison ivy and poison oak, which cause allergic skin reactions in many people.
- 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: Toxicodendron rydbergii Target entity description: Toxicodendron rydbergii, commonly known as western poison ivy, is a North American shrub that causes allergic skin reactions through contact with its urushiol-containing leaves and stems.
-
A.
Toxicodendron pubescens
Toxicodendron pubescens, commonly known as Atlantic poison oak, is a North American shrub noted for its oak-like leaves and skin-irritating, urushiol-containing sap.
-
B.
Toxicodendron vernix
Toxicodendron vernix is a North American shrub or small tree commonly known as poison sumac, notorious for causing severe allergic skin reactions through its urushiol-containing sap.
-
C.
Toxicodendron diversilobum
Toxicodendron diversilobum is a woody shrub or vine native to western North America, commonly known as Pacific poison oak, notorious for causing allergic skin reactions upon contact.
-
D.
Toxicodendron radicans
Toxicodendron radicans is a North American woody vine or shrub commonly known as poison ivy, notorious for causing allergic skin reactions through contact with its urushiol-containing leaves and stems.
-
E.
Toxicodendron
Toxicodendron is a genus of plants best known for species like poison ivy and poison oak, which cause allergic skin reactions in many people.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
plant species
ⓘ
shrubs ⓘ |
| affects | human skin ⓘ |
| allergenType | oil-based organic compound ⓘ |
| causes | allergic contact dermatitis ⓘ |
| commonName | western poison ivy ⓘ |
| contains |
urushiol in leaves
ⓘ
urushiol in stems ⓘ |
| dermatologicalEffect | Type IV hypersensitivity reaction ⓘ |
| distribution | western and northern North America ⓘ |
| exposureRoute | skin contact ⓘ |
| family | Anacardiaceae ⓘ |
| flowerSex | unisexual ⓘ |
| fruitType | drupe ⓘ |
| genus | Toxicodendron ⓘ |
| growthForm |
shrub
ⓘ
subshrub ⓘ |
| habitat |
open forests
ⓘ
riparian areas ⓘ rocky slopes ⓘ woodland edges ⓘ |
| hasAllergen | urushiol ⓘ |
| hasToxicPart |
fruits
ⓘ
leaves ⓘ roots ⓘ stems ⓘ |
| kingdom | Plantae ⓘ |
| leafArrangement | alternate ⓘ |
| leafletsPerLeaf | 3 ⓘ |
| leafType | compound leaves ⓘ |
| lifeCycle | perennial ⓘ |
| nativeTo |
Canada
ⓘ
North America ⓘ United States ⓘ
linked to:
United States of America
|
| photosyntheticPathway | C3 ⓘ |
| pollination | insect-pollinated ⓘ |
| reproduction |
flowers
ⓘ
seeds ⓘ |
| similarTo | Toxicodendron radicans ⓘ |
| symptom |
blistering
ⓘ
itching ⓘ redness ⓘ swelling ⓘ |
| taxonRank | species ⓘ |
| toxicTo | humans ⓘ |
| warning | do not touch with bare skin ⓘ |
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: Toxicodendron rydbergii Description of subject: Toxicodendron rydbergii, commonly known as western poison ivy, is a North American shrub that causes allergic skin reactions through contact with its urushiol-containing leaves and stems.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.