Flowering plant in the St John's wort family Hypericaceae
"St John's wort" redirects here. For the flower known in Devon as St John's wort, see Chelidonium majus.
Hypericum perforatum
Scientific classification
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
L.
Subspecies
H. p. ssp. perforatum
H. p. ssp. songaricum (Ledeb. ex Rchb.) N.Robson
H. p. ssp. veronense (Ledeb. ex Rchb.) N.Robson
H. p. ssp. chinense (Schrank) H.Lindb.
Synonyms
H. officinaleGaterau
H. officinarumCrantz
H. vulgareLam.
Hypericum perforatum, commonly known as St John's wort, is a flowering plant in the family Hypericaceae. It is a perennial plant that grows up to one meter tall, with many yellow flowers that have clearly visible black glands around their edges, long stamens (male reproductive organs), and three pistils (female reproductive organs). Probably a hybrid between the closely related H. attenuatum and H. maculatum that originated in Siberia, the species is now found worldwide. It is native to temperate regions across Eurasia and North Africa, and has been introduced to East Asia, Australia, New Zealand, and parts of North and South America. In many areas where it is not native, H. perforatum is considered a noxious weed. It densely covers open areas to the exclusion of native plants, and is poor grazing material. As such, methods for biocontrol have been introduced in an attempt to slow or reverse the spread of the species.
The species produces numerous chemical compounds that are highly active. These chemicals are harmful to large animals, especially sheep, and help to deter herbivores from consuming the plant. Other chemicals in the plant, such as hypericin and hyperforin, have various uses in medicine. St John's wort has been used in traditional medicine since at least the first century AD, often as a cure-all or panacea. The oil from its glands can be extracted, or its above-ground parts can be ground into a powder called herba hyperici. In modern times, its use as an antidepressant has been the focus of numerous studies and clinical trials; however, the active ingredients can be very harmful or even lethal when taken alongside other medicines.
and 27 Related for: Hypericum perforatum information
Hypericumperforatum, commonly known as St John's wort, is a flowering plant in the family Hypericaceae. It is a perennial plant that grows up to one meter...
distinguishing characteristic; for example, H. perforatum and Hypericum maculatum are easily confused save for H. perforatum having two lines and H. maculatum having...
phytochemical produced by some of the members of the plant genus Hypericum, notably Hypericumperforatum (St John's wort). Hyperforin may be involved in the pharmacological...
, Başer, K. H. C., & Berberoĝlu, H. (1996). Effects of Hypericumperforatum L. and Hypericum calycinum L. extracts on the central nervous system in mice...
and pranlukast, and 5-lipoxygenase inhibitors, like zileuton and Hypericumperforatum, can be used to treat these diseases. They are less effective than...
to the more alkaline environment of the stomach. St. John's wort (Hypericumperforatum) and Ginkgo biloba significantly reduce plasma concentrations of...
antidepressant activities of the Portuguese Hypericum foliosum, Hypericum androsaemum and Hypericumperforatum medicinal plants". Industrial Crops and Products...
hybridises with Hypericumperforatum to produce Des Etang's St John's wort, Hypericum x desetangsii. It is considered to be a medicinal plant. Hypericum maculatum...
most commonly in the St. John's wort family of plants, namely in Hypericumperforatum. In preliminary studies in animal models, pseudohypericin has shown...
bioactive constituents that are found to accumulate in the root system Hypericumperforatum. Xanthones are abundant in angiosperms with cDNA evidence suggesting...
Regulation of Hypericin synthesis via the Polyketide Pathway in Hypericumperforatum and Experimental Methods Proposed to Evaluate the Hypothesis". Archived...
nevirapine levels.[18] In addition, concomitant use of St. John's wort (Hypericumperforatum, which has been shown to induce CYP3A4 and CYP1A2) or St. John's...
types of herbal extract, such as the extract of St. John's-wort (Hypericumperforatum) or of kava (Piper methysticum) can be used for medical purposes...
agent of biological pest control against common St. John's wort (Hypericumperforatum) in areas where it is a noxious weed or invasive species. The adult...
Suffrian in 1851. It is native to Europe and North Africa. It feeds on Hypericumperforatum and other members of the genus. This plant is an introduced invasive...
metabolites on comedication with an extract from St. John's wort ( Hypericumperforatum )". Journal of Clinical Psychopharmacology. 22 (1): 46–54. doi:10...
them have been used for biological control of weeds. To control Hypericumperforatum (St John's wort), C. hyperici was successfully naturalized in Australia...
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