Hypericum is a genus of flowering plants in the family Hypericaceae. The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar regions. Many Hypericum species are regarded as invasive species and noxious weeds. All members of the genus may be referred to as St. John's wort, and some are known as goatweed. The white or pink flowered marsh St. John's worts of North American and eastern Asia are generally accepted as belonging to the separate genus Triadenum.
Hypericum androsaemum, also referred to as Tutsan, Shrubby St. John's Wort, or sweet-amber, is a flowering plant in the family Hypericaceae. It is a perennial shrub reaching up to 70 cm in height, native to open woods and hillsides in Eurasia.
Hypericum hirsutum is a species of flowering plant in the family Hypericaceae, commonly known as hairy St John's-wort. It is found in Western Europe.
Hypericum forrestii is a species of flowering plant in the family Hypericaceae native to China and Myanmar. It is known as Forrest's tutsan and Forrest's St. John's wort. It was named in honour of the Scottish botanist George Forrest (1873-1932), who was the first westerner to discover it. The species has gained the Royal Horticultural Society's Award of Garden Merit.
Hypericum acmosepalum is a dwarf shrub in Hypericumsect. Ascyreia that is native to China and known as jian e jin si tao locally.
Hypericum hircinum, also known as stinking tutsan, is a shrubby flowering plant in the St. John's wort family Hypericaceae.
Hypericum lancasteri, known as Lancaster's St. John's wort or as zhan e jin si tao in Chinese, is a species of flowering plant in the St. John's wort family Hypericaceae. The species has been awarded the Royal Horticultural Society's Award of Garden Merit.
Hypericum pallens, commonly known as the Pale St. John's wort or Mount Lebanon St. John's wort, is a species of flowering plant in the family Hypericaceae which is found in Turkey, Lebanon, and Syria.
Hypericum lycium is a species of flowering plant in the family Hypericaceae which is endemic to Turkey.
Hypericum ternatum is a species of flowering plant in the family Hypericaceae which is endemic to Turkey.
Hypericum haplophylloides is a species of flowering plant in the family Hypericaceae which is endemic to Albania.
Hypericum auriculatum is a species of flowering plant in the family Hypericaceae which is endemic to Turkey.
Hypericum polyphyllum is a species of flowering plant in the family Hypericaceae which is native to Turkey, Lebanon, and Syria.
Hypericum cardiophyllum is a species of flowering plant in the family Hypericaceae which is endemic to Turkey, Lebanon, and Syria.
Hypericum pamphylicum is a species of flowering plant in the family Hypericaceae which is endemic to Turkey.
Hypericum nanum is a species of flowering plant in the family Hypericaceae which is native to Lebanon, Syria, and Israel.
Hypericum × inodorum is a nothospecies of flowering plant in the family Hypericaceae which is native to France, Italy, and Spain, and has been introduced to the United Kingdom, Ireland, Portugal, Switzerland, Chile, Mexico, New Zealand, and Indonesia. The nothospecies is a fertile hybrid of Hypericum androsaemum and Hypericum hircinum, and its hybrid name inodorum derives from the Latin for "odorless". Its cultivar 'Wilhyp' has gained the Royal Horticultural Society's Award of Garden Merit.
Hypericum minutum is a flowering plant in the genus Hypericum, sect. Adenosepalum.
