Pollinator plant

Square Stemmed Saint John's Wort

Hypericum tetrapterum

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Common names

23 names · 18 languages
EnglishYour language
  • Peterwort
  • Square Stemmed Saint John's Wort[1][2]
  • Square-stalked St John's-wort[1][3][2]
+1 more nameShow fewer names
  • square-stalked St John’s wort[4]
Other languages (17)
Dutch
French
  • Millepertuis à quatre ailes[1][2]
  • Millepertuis à quatre angles[1][2]
Czech
  • třezalka čtyřkřídlá[2]
Danish
  • Vinget perikon[2]
Finnish
German
  • Flügel-Johanniskraut[3]
  • Geflügeltes Johanniskraut[1][2]
Hebrew
  • פרע מחודד[2]
Hungarian
  • mocsári orbáncfű[2]
Italian
  • Erba di San Giovanni alata[1][2]
Japanese
  • シカクオトギリ[2]
Lithuanian
  • Sparnuotoji jonažolė[2]
Polish
  • Dziurawiec skrzydełkowaty[2]
Russian
  • Зверобой четырёхкрылый[2]
Slovak
  • ľubovník štvorkrídly[2]
Slovenian
  • krilata krčnica[2]
Swedish
  • kärrjohannesört[2]
Ukrainian
  • Звіробій чотирикрилий[2]
Sources & name notes (4)

Names recorded in our plant catalogue and botanical sources, grouped by language. Usage can vary by region.

Catalogue language labels are reviewed separately from botanical source records.

Numbered references identify names recorded by an external source. Other names are from our plant catalogue.

[1] Hypericum tetrapterum — iNaturalist taxon names ↗

Community-curated iNaturalist taxonomy. This is a common-name attestation, not an independent botanical determination.

Source records
  • Geflügeltes Johanniskraut — results[1].names[7]; taxon id 207572; Hypericum tetrapterum.
  • Square Stemmed Saint John's Wort — results[1].names[1]; taxon id 207572; Hypericum tetrapterum.
  • Square-stalked St John's-wort — results[1].names[5]; taxon id 207572; Hypericum tetrapterum.
  • Millepertuis à quatre ailes — results[1].names[2]; taxon id 207572; Hypericum tetrapterum.
  • Millepertuis à quatre angles — results[1].names[3]; taxon id 207572; Hypericum tetrapterum.
  • Erba di San Giovanni alata — results[1].names[18]; taxon id 207572; Hypericum tetrapterum.
  • Gevleugeld hertshooi — results[1].names[12]; taxon id 207572; Hypericum tetrapterum.
[2] Hypericum tetrapterum — iNaturalist taxon names ↗

Community-curated iNaturalist taxonomy; common-name attestation, not an independent botanical determination.

Source records
  • Geflügeltes Johanniskraut — results[18].names[7]; taxon id 207572; Hypericum tetrapterum.
  • Square Stemmed Saint John's Wort — results[18].names[1]; taxon id 207572; Hypericum tetrapterum.
  • Square-stalked St John's-wort — results[18].names[5]; taxon id 207572; Hypericum tetrapterum.
  • Millepertuis à quatre ailes — results[18].names[2]; taxon id 207572; Hypericum tetrapterum.
  • Millepertuis à quatre angles — results[18].names[3]; taxon id 207572; Hypericum tetrapterum.
  • Erba di San Giovanni alata — results[18].names[18]; taxon id 207572; Hypericum tetrapterum.
  • Gevleugeld hertshooi — results[18].names[12]; taxon id 207572; Hypericum tetrapterum.
  • třezalka čtyřkřídlá — results[18].names[4]; taxon id 207572; Hypericum tetrapterum.
  • Vinget perikon — results[18].names[6]; taxon id 207572; Hypericum tetrapterum.
  • Зверобой четырёхкрылый — results[18].names[8]; taxon id 207572; Hypericum tetrapterum.
  • ojakuisma — results[18].names[9]; taxon id 207572; Hypericum tetrapterum.
  • シカクオトギリ — results[18].names[10]; taxon id 207572; Hypericum tetrapterum.
  • kärrjohannesört — results[18].names[11]; taxon id 207572; Hypericum tetrapterum.
  • Dziurawiec skrzydełkowaty — results[18].names[13]; taxon id 207572; Hypericum tetrapterum.
  • krilata krčnica — results[18].names[14]; taxon id 207572; Hypericum tetrapterum.
  • פרע מחודד — results[18].names[15]; taxon id 207572; Hypericum tetrapterum.
  • Звіробій чотирикрилий — results[18].names[16]; taxon id 207572; Hypericum tetrapterum.
  • mocsári orbáncfű — results[18].names[17]; taxon id 207572; Hypericum tetrapterum.
  • ľubovník štvorkrídly — results[18].names[19]; taxon id 207572; Hypericum tetrapterum.
  • Sparnuotoji jonažolė — results[18].names[20]; taxon id 207572; Hypericum tetrapterum.
[3] Catalogue of Life 2026-08-20 — Hypericum tetrapterum ↗

Common names from World Plants, version 26.05, reproduced in Catalogue of Life 2026-08-20. License: CC BY.

Source records
  • Square-stalked St John's-wort (EN) — VernacularName.tsv, line 161300; taxon 3NQ97.
  • Flügel-Johanniskraut (DE) — VernacularName.tsv, line 161299; taxon 3NQ97.
[4] Royal Horticultural Society — common names ↗

Names retained from the referenced botanical profile or table.

Source records
  • square-stalked St John’s wort — Page 4, column 1, row top 637 pt; common-name cell after Hypericum tetrapterum.; Hypericum tetrapterum.
Plant references

Source-backed information

Published observations for this plant. Each reference supports the information beside it.

Taxonomy
Hypericum tetrapterum is an accepted species in Catalogue of Life.

Taxonomic treatment in the August 2026 release; the catalogue record name is preserved.

Sources [1]
Botanical family
Hypericaceae

Family in the cited taxonomic treatment.

Sources [1]
Pollinator guidance
RHS includes Hypericum tetrapterum in its Plants for Pollinators guidance.

RHS planting guidance. Choose accessible flowers with pollen and nectar; reduced-resource and double-flowered forms may be unsuitable.

Sources [2]
Catalogue ratings

Who this plant supports

Honey bees

Low suitability
Nectar value Unknown
Pollen value Low
Plant profile

About this plant

Peterwort (Hypericum tetrapterum) is a herbaceous plant. It flowers from July to September.

Sources and references

References for the information marked with source numbers on this page.

Sources checked
  1. Catalogue of Life Hypericum tetrapterum — Catalogue of Life COL26.8

    COL26.8 (2026-08-20). Contributing checklist: Synonymic Checklists of the Vascular Plants of the World. This is taxonomic evidence, not an independent ecological study.

    Supports: TaxonomyBotanical family
    Relevant sections
    • Taxonomy: NameUsage.tsv line 415108; ID 3NQ97; rank species; status accepted
    • Botanical family: NameUsage.tsv line 415108; ID 3NQ97; rank species; status accepted

    Source checked on .

    Source data licence: CC BY 4.0.

  2. Royal Horticultural Society RHS Plants for Pollinators — Wildflowers

    RHS planting guidance; applicable flower-form restrictions are retained. General recommendations do not measure local nectar or pollen production.

    Supports: Pollinator guidance
    Relevant sections
    • Pollinator guidance: Page 4, column 1, entry Hypericum tetrapterum (top 637 pt)

    Source checked on .