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Ptaeroxylon

species of plant, Sneeze-wood

Specimen drawers, botanical folios and brass scientific instruments under study light
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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMar 22, 2024
Entity authorityQ311852 ↗
Source-derived summary

Ptaeroxylon obliquum is the botanical name for the sneezewood tree. It is native to Southern Africa, including South Africa, Zimbabwe, and Mozambique. It is the only species in the genus Ptaeroxylon.

Background

Ptaeroxylon obliquum is a species from the family Rutaceae which are most abundant in South Africa and Australia. The term ptaeroxylon is Greek for sneeze and wood, while obliquum denotes the oblique shape of the leaflets. The wood produces oils containing nieshoutol, which causes violent sneeze attacks by workers who are exposed to the tree. Though sneezewood is not poisonous, it has been known to cause respiratory complications. It has been linked to asthma, rhinitis and mucosal inflammation.

Description

Ptaeroxylon obliquum is a shrub or medium deciduous tree that stands up to 15 metres (49 ft) tall.

The bark is whitish-grey and smooth when young, but fissured with age.

Editorial summary

Begin with the source’s own compact description: “Ptaeroxylon” is species of plant, Sneeze-wood. The dossier treats that line as a proposition to test through Ptaeroxylon, species and plant, not as a finished interpretation.

Editorial reviewA practical orientation to terminology and classification, particularly when read beside dated observations, specimens or technical literature. The current 141-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Ptaeroxylon, species and plant is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of plant, Sneeze-wood” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Mar 22, 2024. The linked authority identifier is Q311852. None of the 0 selected statements returned an explicit reference.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Ptaeroxylon”, its source revision and the description used here.
  2. Expand the search: follow Ptaeroxylon primary sources, Ptaeroxylon archive and Ptaeroxylon research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Ptaeroxylon”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Is the terminology current, historical or disputed?
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Source & attribution

This entry incorporates text from “Ptaeroxylon” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.