Zygnema
E910048
Zygnema is a genus of filamentous freshwater green algae characterized by its star-shaped chloroplasts and occurrence in ponds, ditches, and other still or slow-moving waters.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Zygnema canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11180401 — 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: Zygnema Context triple: [Zygnematophyceae, includesGenus, Zygnema]
-
A.
Rhodelia
Rhodelia is an unincorporated rural community located in Meade County, Kentucky, United States.
-
B.
Oxygonum
Oxygonum is a genus of flowering plants in the knotweed family Polygonaceae, native mainly to Africa and known for its herbaceous species with small clustered flowers.
-
C.
Plectrogenium
Plectrogenium is a genus of marine ray-finned fishes in the family Plectrogeniidae, known from deep or offshore waters of the Indo-Pacific region.
-
D.
Anthemiolus
Anthemiolus was a late Western Roman nobleman and son of Emperor Anthemius, known primarily for his failed military involvement against the Visigoths in Gaul.
-
E.
Stemonidium
Stemonidium is a genus of deep-sea eel-like fishes within the family Serrivomeridae, known for their elongated bodies and specialized adaptations to life in the ocean depths.
- 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: Zygnema Target entity description: Zygnema is a genus of filamentous freshwater green algae characterized by its star-shaped chloroplasts and occurrence in ponds, ditches, and other still or slow-moving waters.
-
A.
Rhodelia
Rhodelia is an unincorporated rural community located in Meade County, Kentucky, United States.
-
B.
Oxygonum
Oxygonum is a genus of flowering plants in the knotweed family Polygonaceae, native mainly to Africa and known for its herbaceous species with small clustered flowers.
-
C.
Plectrogenium
Plectrogenium is a genus of marine ray-finned fishes in the family Plectrogeniidae, known from deep or offshore waters of the Indo-Pacific region.
-
D.
Anthemiolus
Anthemiolus was a late Western Roman nobleman and son of Emperor Anthemius, known primarily for his failed military involvement against the Visigoths in Gaul.
-
E.
Stemonidium
Stemonidium is a genus of deep-sea eel-like fishes within the family Serrivomeridae, known for their elongated bodies and specialized adaptations to life in the ocean depths.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
genus
ⓘ
green alga ⓘ |
| belongsToGroup | conjugating green algae ⓘ |
| cellType | eukaryotic ⓘ |
| cellularity | multicellular ⓘ |
| cellWallComposition | cellulose ⓘ |
| chloroplastNumberPerCell | two ⓘ |
| chloroplastShape | star-shaped ⓘ |
| class | Zygnematophyceae NERFINISHED ⓘ |
| conjugationType | scalariform conjugation ⓘ |
| distribution | cosmopolitan ⓘ |
| division | Charophyta NERFINISHED ⓘ |
| domain |
Eukarya
ⓘ
surface form:
Eukaryota
|
| ecologicalRole | primary producer ⓘ |
| family | Zygnemataceae NERFINISHED ⓘ |
| firstDescribedBy | Carl Adolph Agardh NERFINISHED ⓘ |
| firstDescriptionYear | 1817 ⓘ |
| forms | slimy mats ⓘ |
| foundIn |
temperate regions
ⓘ
tropical regions ⓘ |
| habitat |
ditches
ⓘ
freshwater ⓘ ponds ⓘ slow-moving water ⓘ still water ⓘ |
| kingdom | Plantae ⓘ |
| morphology | filamentous ⓘ |
| motileStages | absent ⓘ |
| namedAfter | Greek word "zygon" meaning yoke ⓘ |
| nucleusPerCell | one ⓘ |
| occurrence |
freshwater streams
ⓘ
temporary pools ⓘ |
| occursAs | free-floating filaments ⓘ |
| order | Zygnematales NERFINISHED ⓘ |
| photosynthetic | true ⓘ |
| phylum | Charophyta NERFINISHED ⓘ |
| pigment |
chlorophyll a
ⓘ
chlorophyll b ⓘ |
| relatedTo |
Mougeotia
NERFINISHED
ⓘ
Spirogyra NERFINISHED ⓘ |
| reproductionType |
asexual
ⓘ
sexual ⓘ |
| sexualReproductionMode | conjugation ⓘ |
| storageProduct | starch ⓘ |
| taxonRank | genus ⓘ |
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: Zygnema Description of subject: Zygnema is a genus of filamentous freshwater green algae characterized by its star-shaped chloroplasts and occurrence in ponds, ditches, and other still or slow-moving waters.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.