Douglas fir
E1430
Douglas fir is a large, long-lived conifer native to western North America, valued for its strong timber and ecological importance in mountain and coastal forests.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Douglas-fir | 43 |
| Douglas fir canonical | 13 |
| Douglas-fir (Pseudotsuga menziesii) | 2 |
| Pseudotsuga | 2 |
| Douglas fir trees | 1 |
| Douglas-firs | 1 |
| Douglas‑fir | 1 |
| Pseudotsuga menziesii | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12306 — 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.
Target entity: Douglas fir Context triple: [Yosemite National Park, notableTreeSpecies, Douglas fir]
-
A.
California redwood
The California redwood is a towering, long-lived coniferous tree native to the coastal and mountainous regions of California, renowned for being among the tallest and largest trees on Earth.
-
B.
giant sequoia
The giant sequoia is an enormous, long-lived coniferous tree species native to California’s Sierra Nevada, renowned for being among the largest and most massive trees on Earth.
-
C.
Ulmus
Ulmus is a genus of deciduous trees commonly known as elms, widely distributed across the Northern Hemisphere and valued for their distinctive vase-shaped form and use in landscaping and timber.
-
D.
American elm
The American elm is a large, deciduous North American tree species historically prized for its vase-shaped form and use as a prominent shade and street tree.
-
E.
de Forest
de Forest is a surname most notably associated with Lee de Forest, an American inventor and early pioneer of radio and electronic communication.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Douglas fir Target entity description: Douglas fir is a large, long-lived conifer native to western North America, valued for its strong timber and ecological importance in mountain and coastal forests.
-
A.
California redwood
The California redwood is a towering, long-lived coniferous tree native to the coastal and mountainous regions of California, renowned for being among the tallest and largest trees on Earth.
-
B.
giant sequoia
The giant sequoia is an enormous, long-lived coniferous tree species native to California’s Sierra Nevada, renowned for being among the largest and most massive trees on Earth.
-
C.
Ulmus
Ulmus is a genus of deciduous trees commonly known as elms, widely distributed across the Northern Hemisphere and valued for their distinctive vase-shaped form and use in landscaping and timber.
-
D.
American elm
The American elm is a large, deciduous North American tree species historically prized for its vase-shaped form and use as a prominent shade and street tree.
-
E.
de Forest
de Forest is a surname most notably associated with Lee de Forest, an American inventor and early pioneer of radio and electronic communication.
- F. None of above. chosen
Statements (73)
| Predicate | Object |
|---|---|
| instanceOf |
conifer
ⓘ
evergreen tree ⓘ timber tree ⓘ tree species ⓘ |
| barkColor | gray to brown ⓘ |
| climatePreference |
continental climate
ⓘ
cool moist climate ⓘ maritime climate ⓘ |
| commercialImportance |
major export timber species
ⓘ
one of the most important commercial softwoods in North America ⓘ |
| commonNameOf |
Douglas fir
self-linksurface differs
ⓘ
surface form:
Pseudotsuga menziesii
|
| coneCharacteristic | cones with three-pointed bracts ⓘ |
| coneType | seed cones ⓘ |
| describedBy | David Douglas (as collector) and later taxonomists ⓘ |
| distinguishedFrom | true firs by cone bracts ⓘ |
| evergreenNeedleArrangement | spirally arranged on twigs ⓘ |
| family | Pinaceae ⓘ |
| fireEcology | moderately fire-resistant bark in mature trees ⓘ |
| foundIn |
coastal forests
ⓘ
montane forests ⓘ subalpine forests ⓘ |
| genus |
Douglas fir
self-linksurface differs
ⓘ
surface form:
Pseudotsuga
|
| growthRate | fast-growing ⓘ |
| introducedTo |
Australia
ⓘ
Chile ⓘ Europe ⓘ New Zealand ⓘ |
| kingdom | Plantae ⓘ |
| leafPersistence | evergreen ⓘ |
| leafType | needle-like leaves ⓘ |
| longevity | more than 500 years ⓘ |
| maximumDiameter | over 2 meters at breast height ⓘ |
| maximumHeight |
over 230 feet
ⓘ
over 70 meters ⓘ |
| namedAfter | David Douglas ⓘ |
| nativeTo |
Pacific Northwest
ⓘ
Rocky Mountains ⓘ western North America ⓘ |
| needleLength | about 2 to 3 centimeters ⓘ |
| notTrueFir | not a member of genus Abies ⓘ |
| order | Pinales ⓘ |
| photosyntheticType | C3 plant ⓘ |
| pollination | wind-pollinated ⓘ |
| rangeExtension | widely planted outside native range ⓘ |
| reproduction | sexual reproduction by seeds ⓘ |
| roleInEcosystem |
carbon sequestration
ⓘ
dominant canopy species ⓘ habitat provider for wildlife ⓘ soil stabilization ⓘ |
| seedDispersal | wind-dispersed seeds ⓘ |
| shadeTolerance | moderate shade tolerance ⓘ |
| soilPreference |
deep soils
ⓘ
well-drained soils ⓘ |
| taxonRank | species ⓘ |
| threat |
fire suppression effects
ⓘ
fungal diseases ⓘ insect pests ⓘ logging ⓘ |
| usedFor |
Christmas trees (some varieties)
ⓘ
doors and windows ⓘ engineered wood products ⓘ flooring ⓘ framing lumber ⓘ marine pilings ⓘ paper production ⓘ utility poles ⓘ |
| valuedFor |
construction lumber
ⓘ
ecological importance ⓘ plywood production ⓘ pulpwood ⓘ strong timber ⓘ |
| woodColor | light brown to reddish brown ⓘ |
| woodDensity | relatively high for softwood ⓘ |
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.
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.
Subject: Douglas fir Description of subject: Douglas fir is a large, long-lived conifer native to western North America, valued for its strong timber and ecological importance in mountain and coastal forests.
Referenced by (64)
Full triples — surface form annotated when it differs from this entity's canonical label.