Cirsium helenioides
species of plant
Cirsium helenioides, the melancholy thistle, is an Asian and Arctic species of plants in the tribe Cardueae within the family Asteraceae. The species is native to Greenland (but considered extinct from Greenland since 1960), Iceland, Norway, Sweden, Finland, Russia, Xinjiang and Kazakhstan.
Cirsium helenioides is a perennial plant herb up to 120 cm (48 inches) tall, usually not branched, blooming only once before dying. Leaves are green on top, woolly underneath, with thin spines along the edges. There is one flower head per plant, with purple (occasionally white) disc florets but no ray florets.
This brief starts where responsible research should: with the source description of “Cirsium helenioides” as species of plant. Everything that follows is an evidence route, not borrowed authority.
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.
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 21, 2026. The linked authority identifier is Q15546864. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1960.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. 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 “Cirsium helenioides”, its source revision and the description used here.
- Expand the search: follow Cirsium helenioides primary sources, Cirsium helenioides archive and Cirsium 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 “Cirsium helenioides”?
- 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 “Cirsium helenioides” 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.