Hypericum tetrapterum

Hypericum tetrapterum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Hypericaceae
Genus: Hypericum
Section: Hypericum sect. Hypericum
Subsection: Hypericum subsect. Hypericum
Series: Hypericum ser. Hypericum
Species:
H. tetrapterum
Binomial name
Hypericum tetrapterum
Synonyms
  • Hypericum acutum subsp. tetrapterum (Fr.) Maire
  • Hypericum quadrangulum subsp. tetrapterum (Fr.) Hook.f.
  • Hypericum quadrangulum var. tetrapterum (Fr.) Borg
  • Hypericum quadrialatum Wahlb.
  • Hypericum tetrapterum var. genuinum Cout.

Hypericum tetrapterum (syn. H. quadrangulum) is a herbaceous perennial plant species in the flowering plant family Hypericaceae. Its common names include St. Peter's wort, Peterwort, square stemmed St. John's wort, and square stalked St. John's wort.