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Aquilaria crassna; photograph Raffi Kojian, CC BY-SA 3.0, via Wikimedia Commons CC BY-SARaffi Kojian, CC BY-SA 3.0, via Wikimedia Commons

Aquilaria crassna Pierre ex Lecomte

Thymelaeaceae · Cambodia, Laos +3

Cited as Kew's World Checklist cites it, Aquilaria crassna Pierre ex Lecomte: GBIF's backbone key for this page carries the name with another author, Pierre.

No habitat climate
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Aquilaria crassna, photograph Blaise Droz www.viensdanslajungle.ch, CC BY-SA 3.0, via Wikimedia CommonsAquilaria crassna, photograph Krzysztof Golik, CC BY-SA 4.0, via Wikimedia CommonsAquilaria crassna, photograph Lannafolium, CC0, via Wikimedia CommonsAquilaria crassna, photograph Lannafolium, CC0, via Wikimedia CommonsAquilaria crassna, photograph Raffi Kojian, CC BY-SA 3.0, via Wikimedia Commons 6 photographs ›

Summary

Aquilaria crassna is a species of plant in the Thymelaeaceae family. It is critically endangered and native to Southeast Asia.

Quoted from Wikipedia, "Aquilaria crassna", CC BY-SA 4.0.

About the genus · Aquilaria

Aquilaria is a genus of trees, called lign aloes or lign-aloes trees, in the family Thymelaeaceae. It includes 21 species native to southeast Asia. They occur particularly in the rainforests of Indonesia, Thailand, Cambodia, Laos, Vietnam, southern China, Malaysia, Northeast India, Bangladesh, the Philippines, Borneo and New Guinea. More on Wikipedia ›

Quoted from Wikipedia, "Aquilaria", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: Only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope. 18 of the 19 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeCambodia, Laos, Myanmar, Thailand, Vietnam · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker14.35, 101.37 · in the densest population, 11 records (58% of those in range)
Kew's description“tree” · “wet tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 19 georeferenced records inside the native range; the map shows only the 16 openly licensed ones, which alone would put the marker 8 km away. 1 record outside the WCVP native range not used. No climate across the range is derived for this species. 18 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
Other GBIF keysRecords also from GBIF's key 5524122 (Aquilaria crassna Pierre ex Lecomte): Kew's file holds it as Aquilaria crassna Pierre ex Lecomte (accepted); 12 records, from GBIF's search API on the day of the build.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population inside the densest 2° block of the 19 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Aquilaria crassna, photograph 1did not loadAquilaria crassna, photograph 2did not loadAquilaria crassna, photograph 3did not loadAquilaria crassna, photograph 4did not loadAquilaria crassna, photograph 5did not load

Photographs: Blaise Droz www.viensdanslajungle.ch, CC BY-SA 3.0, via Wikimedia Commons; Krzysztof Golik, CC BY-SA 4.0, via Wikimedia Commons; Lannafolium, CC0, via Wikimedia Commons (2); Raffi Kojian, CC BY-SA 3.0, via Wikimedia Commons.

Other Aquilaria 2 in the reference

Aquilaria malaccensis Aquilaria malaccensis Agarwood Photo: CC BY, Adam KamalAquilaria sinensis Aquilaria sinensis Chinese agarwood Photo: CC BY, CYL

Names & registers

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Thymelaeaceae
Described by
Pierre ex Lecomte
Native to
Cambodia, Laos, Myanmar +2
Wild records
19 in range · 16 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-21
GBIF species record gbif.species answeredasked 2026-10-21GBIF's key 8162077 is Aquilaria crassna Pierre; the page links Kew's Aquilaria crassna Pierre ex Lecomte, and the name is cited as Kew cites it
GBIF synonyms gbif.synonyms answeredasked 2026-10-21
GBIF common names gbif.vernacular answeredasked 2026-10-21names fetched 2026-10-21
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredasked 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 12 records of GBIF's key 5524122, Aquilaria crassna Pierre ex Lecomte (Kew's file holds it as Aquilaria crassna Pierre ex Lecomte (accepted)): GBIF occurrence search API
Habitat climate climate nothing to reportasked 2026-10-21only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope
Wikidata wikidata answeredasked 2026-10-21found by its label; its IPNI identifier 830826-1 is Kew's for Aquilaria crassna Pierre ex Lecomte
Wikipedia wikipedia answeredasked 2026-10-21
iNaturalist photographs, wild inat.photos.wild nothing to reportasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media nothing to reportasked 2026-10-21
Wikimedia Commons commons answeredasked 2026-10-21
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 9 datasets via GBIF.org; each carries its own licence.

Cultifolio

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