Closterium
E910049
Closterium is a genus of crescent-shaped unicellular green algae commonly found in freshwater habitats and noted for its distinctive desmid morphology.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Closterium canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T11180402 — 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: Closterium Context triple: [Zygnematophyceae, includesGenus, Closterium]
-
A.
Daldinia
Daldinia is a genus of ascomycete fungi best known for its charcoal-like, concentric fruiting bodies often found on dead or dying wood.
-
B.
Kohlmeyeriella
Kohlmeyeriella is a genus of marine fungi within the order Lulworthiales, known for inhabiting and decomposing submerged wood and other marine substrates.
-
C.
Pleistrus
Pleistrus is a minor figure in Greek mythology known primarily as a son of Helen of Troy.
-
D.
Clavicordium
Clavicordium is an alternative name for the clavichord, a quiet, early keyboard instrument popular from the late Medieval through Baroque periods for intimate music-making and practice.
-
E.
Blissenobiarella
Blissenobiarella is a character from Isaac Asimov’s Foundation universe, known as a member of the aristocracy on the planet Kalgan who becomes romantically involved with the Mule.
- 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: Closterium Target entity description: Closterium is a genus of crescent-shaped unicellular green algae commonly found in freshwater habitats and noted for its distinctive desmid morphology.
-
A.
Daldinia
Daldinia is a genus of ascomycete fungi best known for its charcoal-like, concentric fruiting bodies often found on dead or dying wood.
-
B.
Kohlmeyeriella
Kohlmeyeriella is a genus of marine fungi within the order Lulworthiales, known for inhabiting and decomposing submerged wood and other marine substrates.
-
C.
Pleistrus
Pleistrus is a minor figure in Greek mythology known primarily as a son of Helen of Troy.
-
D.
Clavicordium
Clavicordium is an alternative name for the clavichord, a quiet, early keyboard instrument popular from the late Medieval through Baroque periods for intimate music-making and practice.
-
E.
Blissenobiarella
Blissenobiarella is a character from Isaac Asimov’s Foundation universe, known as a member of the aristocracy on the planet Kalgan who becomes romantically involved with the Mule.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
alga genus
ⓘ
genus ⓘ green algae ⓘ |
| belongsToGroup | charophyte algae ⓘ |
| cellDivisionType | mitosis ⓘ |
| cellPolarity | bilaterally symmetrical ⓘ |
| cellShape |
crescent-shaped
ⓘ
lunate ⓘ |
| cellularity | unicellular ⓘ |
| cellWallComposition | cellulose ⓘ |
| class | Zygnematophyceae ⓘ |
| contains |
chloroplasts
ⓘ
mucilage pores ⓘ nucleus ⓘ pyrenoids ⓘ vacuoles ⓘ |
| describedAs | crescent-shaped unicellular green alga ⓘ |
| distribution | cosmopolitan ⓘ |
| division | Charophyta ⓘ |
| ecologicalRole |
phytoplankton component
ⓘ
primary producer ⓘ |
| family | Closteriaceae ⓘ |
| foundIn |
freshwater biofilms
ⓘ
planktonic communities ⓘ |
| habitat |
bogs
ⓘ
freshwater ⓘ lakes ⓘ marshes ⓘ ponds ⓘ wetlands ⓘ |
| isA | desmid ⓘ |
| kingdom | Plantae ⓘ |
| notableFeature |
distinctive desmid morphology
ⓘ
elongated semicells ⓘ median constriction between semicells ⓘ |
| nutritionType | photoautotrophic ⓘ |
| order | Desmidiales ⓘ |
| photosyntheticPathway | oxygenic photosynthesis ⓘ |
| phylum | Charophyta ⓘ |
| pigment |
chlorophyll a
ⓘ
chlorophyll b ⓘ |
| relatedTo |
Cosmarium
ⓘ
Spirogyra ⓘ Zygnema ⓘ |
| reproduction |
asexual reproduction by cell division
ⓘ
sexual reproduction by conjugation ⓘ |
| taxonRank | genus ⓘ |
| usedAs | indicator of water quality ⓘ |
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: Closterium Description of subject: Closterium is a genus of crescent-shaped unicellular green algae commonly found in freshwater habitats and noted for its distinctive desmid morphology.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.