List of Hypericum species - Wikipedia
Hypericum online | A site dedicated to Hypericum – The St John's Worts
Hypericum - FNA
Hypericum - Wikispecies
Hypericum perryongii (Hypericaceae), a new species from Philippines
Hypericum - FNA
Hypericum perforatum (St John's wort) | CABI Compendium
v.32:no.2 (2002:Nov.) - Bulletin of the Natural History Museum. Botany series - Biodiversity Heritage Library
Hypericum - Wikipedia
Hypericum perforatum L. | Colombian Plants made accessible
Frontiers | Does phenotyping of Hypericum secondary metabolism reveal a tolerance to biotic/abiotic stressors?
St. John's Wort | Knowledgebase | Johnson's Nursery
Hypericum perforatum L. | Colombian Plants made accessible
PDF) St. John's Wort Hypericum perforatum Laboratory Guidance Document
Plants | Free Full-Text | Mixed-Ploidy and Dysploidy in Hypericum perforatum: A Karyomorphological and Genome Size Study
Hypericum perforatum (St John's wort) | CABI Compendium
St. Andrew's Cross (Hypericum hypericoides) · iNaturalist
![Hypericum perforatum [L. ]](https://hypericum.myspecies.info/sites/hypericum.myspecies.info/files/209.jpg "Hypericum perforatum [L. ]")
Hypericum perforatum [L. ]
Hypericum tetrapterum - Wikipedia
Hypericum perforatum L. | Plants of the World Online | Kew Science
Hypericum perforatum (St John's wort) | CABI Compendium
Hypericum perforatum subsp. perforatum | Plants of the World Online | Kew Science
