Rudbeckia californica
species of plant
Rudbeckia californica is a species of flowering plant in the family Asteraceae, known by the common name California coneflower.
Habitat and range
It is native to California, where it grows in the Sierra Nevada (U.S.). It occurs in moist habitats, such as mountain meadows and streambanks.
Growth pattern
It is an erect perennial herb growing from a thick rhizome, its stem exceeding one meter in maximum height and sometimes approaching two meters. It usually has no branches.
Leaves
Most of the large leaves are basal, with a few alternately arranged along the stem. The leaves can be up to 30 centimeters long and are lance-shaped to oval, smooth-edged or lobed.
Inflorescence and fruit
The inflorescence is a usually solitary sunflower-like flower head with a base up to 6 centimeters wide lined with several ray florets, each of which are 2 to 6 centimeters long. The yellow ray florets extend outwards and then become reflexed, pointing back along the stem. The disc florets filling the button-shaped to conical to cylindrical center of the head are greenish yellow.
Begin with the source’s own compact description: “Rudbeckia californica” is species of plant. The dossier treats that line as a proposition to test through Rudbeckia, californica and species, not as a finished interpretation.
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.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Nov 14, 2025. The linked authority identifier is Q7376813. None of the 0 selected statements returned an explicit reference.
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.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Rudbeckia californica”, its source revision and the description used here.
- Expand the search: follow Rudbeckia californica primary sources, Rudbeckia californica archive and Rudbeckia research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Rudbeckia californica”?
- Has classification or technical consensus changed since the cited source?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “Rudbeckia californica” 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.