Phaeophyceae
E323109
Phaeophyceae is a class of brown algae, predominantly marine seaweeds, that includes many large, multicellular forms such as kelps and rockweeds.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Phaeophyceae canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T3044784 — 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: Phaeophyceae Context triple: [Sargassum natans, class, Phaeophyceae]
-
A.
Ochrophyta
Ochrophyta is a diverse phylum of mostly photosynthetic, predominantly marine algae that includes brown algae and related groups characterized by chlorophylls a and c and distinctive plastids.
-
B.
Zygnematophyceae
Zygnematophyceae is a class of freshwater green algae, including filamentous and unicellular forms like Spirogyra, that are among the closest algal relatives of land plants.
-
C.
Chromista
Chromista is a diverse eukaryotic kingdom that includes many algae and protist groups, such as brown algae and diatoms, characterized by complex plastids and often aquatic lifestyles.
-
D.
Chaetosphaeriales
Chaetosphaeriales is an order of filamentous ascomycete fungi known for their saprobic lifestyle, decomposing plant material in terrestrial and aquatic habitats.
-
E.
Sargassaceae
Sargassaceae is a family of brown algae best known for including the floating seaweeds of the genus Sargassum that dominate the Sargasso Sea ecosystem.
- 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: Phaeophyceae Target entity description: Phaeophyceae is a class of brown algae, predominantly marine seaweeds, that includes many large, multicellular forms such as kelps and rockweeds.
-
A.
Ochrophyta
Ochrophyta is a diverse phylum of mostly photosynthetic, predominantly marine algae that includes brown algae and related groups characterized by chlorophylls a and c and distinctive plastids.
-
B.
Zygnematophyceae
Zygnematophyceae is a class of freshwater green algae, including filamentous and unicellular forms like Spirogyra, that are among the closest algal relatives of land plants.
-
C.
Chromista
Chromista is a diverse eukaryotic kingdom that includes many algae and protist groups, such as brown algae and diatoms, characterized by complex plastids and often aquatic lifestyles.
-
D.
Chaetosphaeriales
Chaetosphaeriales is an order of filamentous ascomycete fungi known for their saprobic lifestyle, decomposing plant material in terrestrial and aquatic habitats.
-
E.
Sargassaceae
Sargassaceae is a family of brown algae best known for including the floating seaweeds of the genus Sargassum that dominate the Sargasso Sea ecosystem.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
algal class
ⓘ
brown algae ⓘ |
| bodyOrganization |
macroscopic thalli
ⓘ
mostly multicellular ⓘ |
| cellType | eukaryotic ⓘ |
| cellWallComponent |
alginic acid
ⓘ
cellulose ⓘ sulfated polysaccharides ⓘ |
| chloroplastOrigin | secondary endosymbiosis ⓘ |
| commonName |
brown algae
ⓘ
brown seaweeds ⓘ |
| describedBy | Friedrich Traugott Kützing ⓘ |
| distribution | worldwide in marine environments ⓘ |
| domain |
Eukarya
ⓘ
surface form:
Eukaryota
|
| ecologicalRole |
habitat formers in kelp forests
ⓘ
primary producers in coastal ecosystems ⓘ |
| economicUse |
food in some cultures
ⓘ
source of alginates ⓘ |
| environmentalImportance | carbon sequestration in coastal oceans ⓘ |
| etymologyLanguage | Greek ⓘ |
| etymologyMeaning | dusky or brown algae ⓘ |
| flagellatedStage | biflagellate zoospores or gametes ⓘ |
| flagellaType | one tinsel-type and one whiplash-type flagellum ⓘ |
| habitat |
marine
ⓘ
predominantly cold and temperate coastal waters ⓘ |
| includes |
Ascophyllum
ⓘ
Fucus ⓘ Laminaria ⓘ Macrocystis ⓘ Sargassum ⓘ kelps ⓘ rockweeds ⓘ |
| kingdom | Chromista ⓘ |
| lifeCycle | often alternation of generations ⓘ |
| photosyntheticOrganelles | chloroplasts with four membranes ⓘ |
| phylum | Ochrophyta ⓘ |
| pigment |
chlorophyll a
ⓘ
chlorophyll c ⓘ fucoxanthin ⓘ |
| reasonForColor | dominance of fucoxanthin over chlorophylls ⓘ |
| reproduction |
asexual reproduction by spores
ⓘ
sexual reproduction with oogamy or isogamy ⓘ |
| storageProduct |
laminarin
ⓘ
mannitol ⓘ |
| subphylum | Phaeista ⓘ |
| superclass | Phaeista ⓘ |
| taxonomicRank | class ⓘ |
| typicalColor | brown to olive-green ⓘ |
| yearDescribed | 1843 ⓘ |
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: Phaeophyceae Description of subject: Phaeophyceae is a class of brown algae, predominantly marine seaweeds, that includes many large, multicellular forms such as kelps and rockweeds.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Cystoseira