St. John’s Wort

dried and fresh, flowering St. John's wort with bowl and spoons on a wooden background

Hypericum perforatum

Synonyms:
Guan Ye Lian Qiao
St. John's Wort (Wikipedia)

Hypericum perforatum
Saint John's wort flowers.jpg
Scientific classification edit
Kingdom:Plantae
Clade:Tracheophytes
Clade:Angiosperms
Clade:Eudicots
Clade:Rosids
Order:Malpighiales
Family:Hypericaceae
Genus:Hypericum
Section:Hypericum sect. Hypericum
Species:
H. perforatum
Binomial name
Hypericum perforatum

Hypericum perforatum, known as perforate St John's-wort, is a flowering plant in the family Hypericaceae and the type species of the genus Hypericum.

Possibly a hybrid between H. maculatum and H. attenuatum, the species can be found across temperate areas of Eurasia and has been introduced as an invasive weed to much of North and South America, as well as South Africa and Australia. While the species is harmful to livestock and can interfere with prescription drugs, it has been used in folk medicine over centuries, and remains commercially cultivated in the 21st century. Hyperforin, a phytochemical constituent of the species, is under basic research for its possible biological properties.

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