Discocactus
E869602
Discocactus is a small genus of globular, often night-blooming cacti native to South America, known for their distinctive cephalium and fragrant white flowers.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Discocactus canonical | 1 |
| Discocactus horstii | 1 |
| Discocactus placentiformis | 1 |
| Discocactus zehntneri | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10349205 — 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: Discocactus Context triple: [Cactoideae, includesGenus, Discocactus]
-
A.
Astrophytum
Astrophytum is a small genus of distinctive, star-shaped cacti native to North America, prized in cultivation for their geometric forms and often speckled or woolly surfaces.
-
B.
Lophocereus schottii
Lophocereus schottii is a columnar cactus species native to the Sonoran Desert region of northwestern Mexico, known for its tall, slender, many-branched stems and adaptation to arid environments.
-
C.
Echinocactus
Echinocactus is a genus of globular, heavily spined cacti native to Mexico and the southwestern United States, commonly known as barrel cacti.
-
D.
Gymnocalycium
Gymnocalycium is a genus of small, often globular South American cacti popular in cultivation for their distinctive ribbed bodies and colorful flowers.
-
E.
Mammillaria
Mammillaria is a large and diverse genus of small, often spherical cacti known for their dense tubercles and attractive ring-shaped flower displays.
- 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: Discocactus Target entity description: Discocactus is a small genus of globular, often night-blooming cacti native to South America, known for their distinctive cephalium and fragrant white flowers.
-
A.
Astrophytum
Astrophytum is a small genus of distinctive, star-shaped cacti native to North America, prized in cultivation for their geometric forms and often speckled or woolly surfaces.
-
B.
Lophocereus schottii
Lophocereus schottii is a columnar cactus species native to the Sonoran Desert region of northwestern Mexico, known for its tall, slender, many-branched stems and adaptation to arid environments.
-
C.
Echinocactus
Echinocactus is a genus of globular, heavily spined cacti native to Mexico and the southwestern United States, commonly known as barrel cacti.
-
D.
Gymnocalycium
Gymnocalycium is a genus of small, often globular South American cacti popular in cultivation for their distinctive ribbed bodies and colorful flowers.
-
E.
Mammillaria
Mammillaria is a large and diverse genus of small, often spherical cacti known for their dense tubercles and attractive ring-shaped flower displays.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | genus of plants ⓘ |
| cephaliumPosition | apical ⓘ |
| clade |
Angiosperms
ⓘ
linked to:
Magnoliophyta
Eudicots ⓘ Tracheophyta ⓘ |
| conservationIssues |
habitat loss
ⓘ
overcollection ⓘ |
| conservationStatus | many species threatened ⓘ |
| cultivationDifficulty | difficult in cultivation ⓘ |
| describedBy | Augustin Pyramus de Candolle ⓘ |
| dormancyPeriod | cooler drier winter rest ⓘ |
| family | Cactaceae ⓘ |
| flowerColor | white ⓘ |
| floweringTime | night-blooming ⓘ |
| flowerScent | fragrant ⓘ |
| frostTolerance | low ⓘ |
| fruitType | berry ⓘ |
| growthForm | globular cactus ⓘ |
| growthHabit | small-sized cactus ⓘ |
| habitat |
cerrado
ⓘ
dry grasslands ⓘ rocky outcrops ⓘ savanna ⓘ |
| hasSpines | true ⓘ |
| hasStructure | cephalium ⓘ |
| kingdom | Plantae ⓘ |
| lightRequirement | bright light with some shade ⓘ |
| nativeTo |
Argentina
ⓘ
Bolivia ⓘ Brazil ⓘ Paraguay ⓘ South America ⓘ |
| notableSpecies |
Discocactus horstii
ⓘ
linked to:
Discocactus
Discocactus placentiformis ⓘ
linked to:
Discocactus
Discocactus zehntneri ⓘ
linked to:
Discocactus
|
| order | Caryophyllales ⓘ |
| photosynthesisType | CAM ⓘ |
| pollination |
bats
ⓘ
moths ⓘ nocturnal pollinators ⓘ |
| reproductiveOrgan | cephalium-borne flowers ⓘ |
| seedDispersal | animals ⓘ |
| soilRequirement | well-drained mineral substrate ⓘ |
| subfamily | Cactoideae ⓘ |
| temperatureRequirement | warm-growing ⓘ |
| tribe | Cereeae ⓘ |
| usedAs | ornamental plant ⓘ |
| waterRequirement | moderate watering in growing season ⓘ |
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: Discocactus Description of subject: Discocactus is a small genus of globular, often night-blooming cacti native to South America, known for their distinctive cephalium and fragrant white flowers.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Discocactus
linked to: Discocactus
linked to: Discocactus