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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 ...
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Hypericum frondosum, the cedarglade St. Johnswort or golden St. John's wort, is a species of flowering plant in the St. John's wort family, Hypericaceae. [ 1 ] [ 2 ] [ 3 ] It is native to the central and southeastern United States in dry, rocky habitats.
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The beetles Chrysolina quadrigemina, Chrysolina hyperici and the St. John's-wort root borer (Agrilus hyperici) feed on common St. John's-wort (H. perforatum) plants and have been used for biocontrol where the plant has become an invasive weed. [13] Hypericum species are the only known food plants of the caterpillar of the treble-bar, a species ...
St. John's Wort - Can refer to any species of Hypericum. Stonewort - A general name for plants of the genus Chara and Nitella; water horsetail. St. Paul's Wort – species of the genus Sigesbeckia, such as Eastern St Paul's-wort, Sigesbeckia orientalis. [4] St. Peter's Wort - Any plant of the genus Ascyrum, such as Hypericum quadrangulum.
Hypericum yezoense [a], the Yezo St John's wort, is a species of flowering plant in the St John's wort family Hypericaceae. Native to Japan, Sakhalin, and the Kurils, the plant can be found among rocks and in grasslands. It is a perennial herb with many stems and small flower clusters.
Hypericum aegypticum is a species of flowering plant of the St. John's wort family (Hypericaceae) which is native to the Eastern Mediterranean.It was described by Carl Linnaeus in the second volume of his Species Plantarum in 1753, who named it after Egypt despite it not being distributed there.