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Agoseris apargioides

species of plant

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 28, 2025
Entity authorityQ4693595 ↗
Source-derived summary

Agoseris apargioides is a species in the family Asteraceae, is commonly called seaside agoseris or seaside false-dandelion. It is native to the Pacific coast of the United States from Washington to central California, where it grows primarily on coastal dunes.

Agoseris apargioides is a low-growing, perennial herb with milky or orange sap, that may be stemless or with long, rhizome-like stems that are buried by drifting sand. The leaves form low rosettes on the ground. They are slender to broad, up to 15 centimeters long, and usually with 3-5 pairs of lobes along the margins (these sometimes lacking). The peduncle of the inflorescence can be as tall as 45 centimeters but is usually much shorter. The flower head is up to 2 centimeters wide, surrounded by glabrous to hairy phyllaries, and contains yellow ray florets (the outer ones often have a purple strip on the lower surface) but no disc florets. The fruit is an achene between 5-12 millimeters long; the lower part of the achene contains a single seed, while the upper portion of the achene forms a slender beak that possesses a terminal, white pappus.

Varieties

Three varieties are recognized by Flora of North America and Calflora but not by The Plant List:

Agoseris apargioides var. apargioides - west-central California

Agoseris apargioides var.

Editorial summary

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

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current 215-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, Agoseris, apargioides and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of plant” 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

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 Jun 28, 2025. The linked authority identifier is Q4693595. None of the 0 selected statements returned an explicit reference.

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

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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 “Agoseris apargioides”, its source revision and the description used here.
  2. Expand the search: follow Agoseris apargioides primary sources, Agoseris apargioides archive and Agoseris 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

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  2. Has classification or technical consensus changed since the cited source?
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Source & attribution

This entry incorporates text from “Agoseris apargioides” 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.