Hypericaceae
Peterwort
Hypericum tetrapterum
- Family
- Hypericaceae
- Genus
- Hypericum
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Common names
By language (21)
- Belarusian
- Святаяннік чатырохкрылы
- Bulgarian
- Четирикрила звъника
- Chinese
- 四翼金丝桃
- Czech
- Třezalka čtyřkřídlá
- Danish
- Vinget Perikum
- Dutch
- Gevleugeld hertshooi
- English
- Peterwort, Square stemmed St. John's wort, Square-stalked St John's-wort, St. Peter's wort
- Finnish
- Ojakuisma
- French
- Millepertuis à quatre ailes, Millepertuis à quatre angles
- German
- Geflügeltes Johanniskraut, Flügel-Hartheu, Flügel-Johanneskraut, Flügel-Johanniskraut, Scharfkantiges Johanniskraut
- hsb
- Wótry křižomnik
- Hungarian
- Mocsári orbáncfű
- Lithuanian
- Sparnuotoji jonažolė
- Persian
- گل راعی چهارباله
- Polish
- Dziurawiec skrzydełkowaty
- Russian
- Зверобой четырёхкрылый, Зверобой четырёхгранный
- Slovak
- Ľubovník štvorkrídly
- Slovenian
- Krliata krčnica, Krilata krčnica
- Spanish
- Peterwort
- Swedish
- Kärrjohannesört
- Welsh
- Eurinllys pedronglog
Synonyms
- Holosepalum quadrangulum (L.) Fourr.
- Hypericum acutum Moench
- Hypericum acutum f. humile (Boenn.) Hegi
- Hypericum acutum subsp. tetrapterum (Fr.) Maire
- Hypericum acutum subsp. typicum Gușul.
- Hypericum acutum var. anagallidioides (Jaub. & Spach) Zohary
- Hypericum acutum var. anagallifolium (Boiss.) Post
- Hypericum anagallidioides Jaub. & Spach
- Hypericum borbasii Formánek
- Hypericum confertum (Choisy) G.Don
- Hypericum maculatum subsp. quadrangulum (L.) Hayek
- Hypericum neapolitanum var. confertum (Choisy) Guss.
- Hypericum quadrangulare Willd.
- Hypericum quadrangulare var. alatum (Retz.) Boenn.
- Hypericum quadrangulare var. humile Boenn.
- Hypericum quadrangulum L.
- Hypericum quadrangulum subsp. acutum Rivas Goday & Borja
- Hypericum quadrangulum subsp. tetrapterum (Fr.) Hook.f.
- Hypericum quadrangulum var. acutum (Moench) Fiori
- Hypericum quadrangulum var. confertum Choisy
- Hypericum quadrangulum var. tetrapterum (Fr.) Borg
- Hypericum quadratum Stokes
- Hypericum quadrialatum Wahlb.
- Hypericum rotundatum Schur
- Hypericum tetrapterum var. anagallifolium Boiss.
- Hypericum tetrapterum var. genuinum Cout.
Flowers
- In flower
- July to September (from 168 flowering iNaturalist observations worldwide)
Photos
FlowerPhoto: carnifex, CC BY 4.0, from iNaturalist 
FlowerPhoto: Jacqueline Worthington, CC BY 4.0, from iNaturalist 
FlowerPhoto: Jamie O'Neill, CC BY 4.0, from iNaturalist 
Photo: Étienne Lacroix-Carignan, CC0, from iNaturalist 
Photo: Kurt Stüber [1], CC BY-SA 3.0, from Wikimedia Commons Photo: yvon s, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Patrick Sowers, CC0, from iNaturalist 
Photo: Kurt Stüber [1], CC BY-SA 3.0, from Wikimedia Commons Photo: craig_melville, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Jon Mortin, CC BY 4.0, from iNaturalist 
Photo: Bjoertvedt, CC BY-SA 3.0, from Wikimedia Commons Photo: olivier Sigaud, CC BY-SA 4.0, from Pl@ntNet via GBIF
More in Hypericum
- Common St. JohnswortHypericum perforatumHypericaceae
- Spotted St. JohnswortHypericum maculatumHypericaceae
- Sweet-amberHypericum androsaemumHypericaceae
- Hairy St John's-wortHypericum hirsutumHypericaceae
- Trailing St. JohnswortHypericum humifusumHypericaceae
- Mountain St. John's WortHypericum montanumHypericaceae
- Aaron's beardHypericum calycinumHypericaceae
- Slender St John's-wortHypericum pulchrumHypericaceae
- Goat St John's wortHypericum hircinumHypericaceae
- Goldencup St. John's wortHypericum patulumHypericaceae
- Hypericum triquetrifoliumHypericaceae
- Great St. JohnswortHypericum ascyronHypericaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.