Calystegia sepium
species of plant
Calystegia sepium or Convolvulus sepium (hedge bindweed) is a species of flowering plant in the family Convolvulaceae. It has a subcosmopolitan distribution throughout temperate regions of the North and South hemispheres.
Description
Calystegia sepium is a perennial herbaceous plant that twines in a counter-clockwise direction to a height of up to 3 m (10 ft). The leaves are arranged alternately on the spiralling stem; they are dull green above and paler below, simple and sagittate (arrowhead shaped), 5–10 cm (2–4 in) long and 3–7 cm (1+1⁄4–2+3⁄4 in) broad.
The flowers are white, sometimes tinged pale pink, produced from late spring to the end of summer (between July and September in northern Europe). The buds are enclosed by large (2 cm (3⁄4 in) long), ovate-lanceolate, green bracteoles with keels and burgundy margins; during anthesis they do not (or scarcely) overlap. The open flowers are trumpet-shaped, 3–7 centimetres (1+1⁄4–2+3⁄4 in) diameter. After flowering, the fruit develops as an almost spherical capsule, which is hidden by the bracts. It is 1 centimetre (1⁄2 in) in diameter, containing two to four large, dark brown, or black seeds that are shaped like quartered oranges.
The plant thrives in hedges, fields, borders, beside water, on roadsides and woodland edges.
This brief starts where responsible research should: with the source description of “Calystegia sepium” 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.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Aug 30, 2026. The linked authority identifier is Q161704. 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 “Calystegia sepium”, its source revision and the description used here.
- Expand the search: follow Calystegia sepium primary sources, Calystegia sepium archive and Calystegia 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 “Calystegia sepium”?
- Is the terminology current, historical or disputed?
- Which observation, specimen, dataset or publication supports the account?
Search terms from this dossier
This entry incorporates text from “Calystegia sepium” 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.