CACrown ArchivesThe cinema collection
Menu
Research dossier · Science & Nature

Petrophile longifolia

species of plant

Specimen drawers, botanical folios and brass scientific instruments under study light
Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 23, 2022
Entity authorityQ18075376 ↗
Source-derived summary

Petrophile longifolia, commonly known as the long-leaved cone bush is a shrub which is native to the south west of Western Australia, growing between the city of Albany and the Stirling Range.

Description

Petrophile longifolia is a ground-hugging shrub without a lignotuber, but with short stems and long (20–40 cm), thin cylindrical leaves with a sharp-pointed end. The flower heads are silky, cream in colour, 4–6 cm across, at the ends of short branches and surrounded by many short, pointed, leaf-like bracts. The flowers appear in late spring and early summer and are followed by long, oval-shaped fruits which, like others of the genus, only release their seeds after a fire or the death of the plant.

Taxonomy and naming

Petrophile longifolia was first formally described in 1830 by Robert Brown from a specimen collected in 1829 near King George Sound by William Baxter. The description was published in Supplementum primum Prodromi florae Novae Hollandiae The specific epithet (longifolia) is derived from the Latin words longus meaning "long" and folium meaning "leaf".

Distribution and habitat

Long-leaved cone bush is found in the Esperance Plains, Jarrah forest, Swan Coastal Plain and Warren biogeographical regions. It grows in sand, gravel, sandy loam or clay on sandplains.

Cultivation

Petrophile longifolia, like others of its genus is not often cultivated but although it is a western species, is more reliable in humid east coast gardens than many others. It performs best in areas with dry summers and well drained soils in a sunny position.

Editorial summary

“Petrophile longifolia” enters the record as species of plant. Crown Archives preserves that source wording while asking what Petrophile, longifolia and species can confirm, complicate or overturn.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current lead gives the account dated anchors—1830, 1829—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Petrophile, longifolia and species.
Editorial analysis

Why this record matters

“Petrophile longifolia” is worth following because a concise public description often conceals a longer documentary argument. Here, Petrophile, longifolia and species provides the most credible route into that argument.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jul 23, 2022. The linked authority identifier is Q18075376. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1830 and 1829.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. 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
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Petrophile longifolia”, its source revision and the description used here.
  2. Expand the search: follow Petrophile longifolia primary sources, Petrophile longifolia archive and Petrophile 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 “Petrophile longifolia”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Has classification or technical consensus changed since the cited source?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Petrophile longifolia” 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.