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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 ...
The underside of the leaves is a blue-green color and in the fall, the leaves take on a purple color. [5] The flowers are 3–5 cm in diameter, a rich yellow, with five petals and numerous yellow stamens. Its flowers can be described as "rose-like" and tend to be single or in units of two or three, [4] flowering in June to September. [6]
Hypericum mutilum is a species of St. John's wort known by the common name dwarf St. John's wort. It is native to parts of North America and is present in other parts as an introduced species . It is an annual or perennial herb taking a multibranched erect form up to about 60 centimeters tall.
It is considered to be a medicinal plant. [4] Hypericum maculatum herb has been used in the traditional Austrian medicine internally as tea or oil extract, and externally as oil extract, ointment or cold maceration in ethanol for treatment of disorders of the skin, locomotor system, nervous system, gastrointestinal tract, respiratory tract, kidneys and urinary tract, cardiovascular system ...
Chrysolina hyperici is most often known in English by the common names "St. Johnswort Beetle", "Saint John's Wort Beetle" or close variations. [3] In the United States C. hyperici is also known by the common name "klamathweed beetle" from one of the common names of Hypericum perforatum.
Hypericum scouleri, known by the common name Scouler's St. John's wort in English, is a flowering species of plant from western North America. It grows in areas around streams and wetlands from Canada to the highlands of Mexico. It is sometimes mistaken for the invasive Perforate St John's wort from Eurasia.
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 lloydii, known as Lloyd's St. John's-wort [2] or sandhill St. John's wort, [citation needed] is a species of flowering plant in the St. John's wort family (Hypericaceae). It is native to the Southeastern United States where it is found primarily in the lower Piedmont and inner Coastal Plain .