grass and flowers St. John's wort
St John's wort (IPA pronunciation: [-wɝt], rhyming with hurt, or [-wɔt]) used alone refers to the species Hypericum perforatum, also known as Klamath weed or Goat weed, but is used with qualifiers to refer to any species of the genus Hypericum. H. perforatum is sometimes called Common St. John's wort to distinguish it. The species of Hypericum have been placed by some in the family Hypericaceae, but more recently have been included in the Clusiaceae. Hypericum perforatum is a yellow-flowering, rhizomatous, perennial herb indigenous to Europe, which has been introduced to the Americas and grows wild in many meadows. The common name comes from the fact that it traditionally flowers by and is harvested on St John's day, 24 June. The genus name "hypericum" is derived from the Greek words hyper (above) and eikon (picture) in reference to the traditional use of the plant to ward off evil, by hanging plants over a picture in the house during St John's day. The species name "perforatum" refers to the small windows in the leaves, which can be seen when they are held against the light. Although Hypericum perforatum is grown commercially in some regions of south east Europe, it is listed as a noxious weed in over twenty countries. Ingestion by livestock can cause photosensitization, central nervous system depression, spontaneous abortion, and can lead to death. Effective herbicides for control of Hypericum include 2,4-D, picloram, and glyphosate. In western North America three beetles Chrysolina quadrigemina, Chrysolina hyperici and Agrilus hyperici have been introduced as biocontrol agents. The first recorded use of Hypericum for medicinal purposes dates back to ancient Greece, and has been used ever since. The herb was also used by Native Americans internally as an abortifacient and externally as an anti-inflammatory, astringent, and antiseptic. The aerial parts of the plant can be cut and dried for later use in the form of herbal tea, which has long been enjoyed both for it
Size: 5256px × 3504px
Photo credit: © Piotr & Irena Kolasa / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bedsun, elba, elbe, flower, flowers, forest, grass, green, guttiferae, hypericum, illuminated, johanniskraut, john, johnswort, laba, lawn, leaf, leaves, meadow, perforatum, pretty, river, romantic, st., sunrise, sunset, tired, wort, yellow
