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Hypericum / ˌ h aɪ ˈ p iː r ɪ k əm / is a genus of flowering plants in the family Hypericaceae (formerly considered a subfamily of Clusiaceae). [ 3 ] [ 4 ] The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar regions . [ 5 ]
Hypericum perforatum, commonly known as St John's wort (sometimes perforate St John's wort or common St John's wort), is a flowering plant in the family Hypericaceae.It is a perennial plant that grows up to 1 metre (3 ft 3 in) tall, with many yellow flowers that have clearly visible black glands around their edges, long stamens (male reproductive organs), and three pistils (female reproductive ...
Hypericum calycinum is indigenous to southeast Europe and southwest Asia. It is a popular, semi-evergreen garden shrub with many named cultivars and hybrids derived from it. Although the genus is generally not affected by rust fungi, it can appear on H. calycinum (and another cultivated plant, Hypericum × inodorum 'Elstead'). [7]
Toxic to cardio and central nervous systems, gastrointestinal bleeding [3] Ephedra: ma huang: Ephedra sinica: Agitation and palpitations, [3] "hypertension, irregular heart rate, insomnia, nervousness, tremors and seizures, paranoid psychosis, heart attacks, strokes, and death", [1] [15] kidney stones [15] Flavonoids (contained in many ...
H. sechmenii has two adaptations of the genus Hypericum that deter grazing. The first is the presence of numerous black glands on the leaf margins; in other species of Hypericum, similar glands have been shown to contain compounds that are toxic to creatures consuming the plant. [8]
Hypericin is a naphthodianthrone, an anthraquinone derivative which, together with hyperforin, is one of the principal active constituents of Hypericum (Saint John's wort). [2] [3] Hypericin is believed to act as an antibiotic, antiviral [2] and non-specific kinase inhibitor.
Hypericum punctatum, the spotted St. John's wort, is a perennial herb native to North America. [2] The yellow-flowered herb occurs throughout eastern North America into southern Canada . The process of microsporogenesis carried out by this plant is prone to errors in chromosomal segregation .
Hypericum androsaemum, the shrubby St. John's wort, is a flowering plant in the family Hypericaceae.Commonly called tutsan or sweet-amber, the species is cultivated as an ornamental plant because of its striking red-tinted foliage, bright yellow petals, and its large clusters of fruit.