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Oenothera hartwegii

species of plant

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 13, 2025
Entity authorityQ17602216 ↗
Source-derived summary

Oenothera hartwegii (syn. Calylophus hartwegii), Hartweg's sundrops, is a species of flowering plant in the evening primrose family Onagraceae. It is native to the desert southwest of the United States, and to northern and western Mexico. A perennial usually 30 to 45 cm (12 to 18 in) tall and 60 cm (24 in) wide, it is used locally as a drought-resistant ground cover.

Subtaxa

The following subspecies are accepted:

Oenothera hartwegii subsp. fendleri (A.Gray) W.L.Wagner & Hoch – Arizona, New Mexico, Kansas, Oklahoma, Texas, northeastern Mexico

Oenothera hartwegii subsp. filifolia (Eastw.) W.L.Wagner & Hoch – New Mexico, Texas, northeastern Mexico

Oenothera hartwegii subsp. hartwegii – Colorado, Texas, northern and western Mexico

Oenothera hartwegii subsp. maccartii (Shinners) W.L.Wagner & Hoch – Texas, northeastern Mexico

Oenothera hartwegii subsp.

Editorial summary

This brief starts where responsible research should: with the source description of “Oenothera hartwegii” as species of plant. Everything that follows is an evidence route, not borrowed authority.

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 126-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. The account is most persuasive where Oenothera, hartwegii and species can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the science & nature register because the source frames it as species of plant. Its deeper value depends on whether names, dates, institutions and citations support that framing.

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 Sep 13, 2025. The linked authority identifier is Q17602216. None of the 0 selected statements returned an explicit reference.

Critical limits

Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. 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
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 “Oenothera hartwegii”, its source revision and the description used here.
  2. Expand the search: follow Oenothera hartwegii primary sources, Oenothera hartwegii archive and Oenothera 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 “Oenothera hartwegii”?
  2. Is the terminology current, historical or disputed?
  3. Which observation, specimen, dataset or publication supports the account?
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Source & attribution

This entry incorporates text from “Oenothera hartwegii” 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.