Triadenum, known as marsh St. John's worts, is a small genus of flowering plants in the family Hypericaceae. The genus is characterized by opposite, blunt-tipped leaves and pink flowers with 9 stamens. They are distributed in North America and eastern Asia.
Hypericum concinnum is a species of flowering plant known as gold-wire or goldwire. It is in the St. John's wort family, Hypericaceae. It is the only species in the section Hypericum sect. Concinna.
Hypericum balearicum is a species of flowering plant in the family Hypericaceae, native to Spain's Balearic Islands. It is the only species in the section Psorophytum.
Hypericum addingtonii is a shrubby species of flowering plant in the family Hypericaceae. It is native to China and was described by Norman Robson in 1985.
Hypericum athoum is a perennial herb in the Hypericaceae family. It is endemic to Greece.
Hypericum xylosteifolium is a flowering plant in the St. John's wort family, Hypericaceae. It is the only species in Hypericum sect. Inodora.
Hypericum lanuginosum, or downy St. John's wort, is a perennial herb, a flowering plant in the St. John's wort family Hypericaceae.
Hypericum pubescens is a perennial herb in the Hypericaceae family. It is in the section Adenosepalum.
Hypericum kouytchense, the large-flowered St John’s wort, is a species of flowering plant in the family Hypericaceae, native to Western China. Growing up to 3 ft (0.91 m) tall and 5 ft (1.5 m) wide, it is a semi-evergreen rounded shrub with blue-green leaves and large yellow flowers with prominent stamens, appearing in midsummer. Flowers are followed by red seed capsules in autumn. Where conditions are favourable it can retain its leaves all year.
Hypericum cerastioides is a species of perennial flowering plant in the St. John's wort family, Hypericaceae. It is the only species in the section Hypericum sect. Campylopus.
Hypericum reflexum is a species of plant in the St. Johns wort family, Hypericaceae, endemic to the Canary Islands. It is a small shrub up to 1 m in height with opposite, sessile leaves up to 25 mm (0.98 in) long and 12 mm (0.47 in) across. The flowerheads produce 5–40 bright yellow flowers with five petals each.
Hypericum japonicum, known as matted St. John's-wort, is an annual herbaceous flowering plant in the St. John's wort family Hypericaceae, in Hypericum sect. Trigynobrathys.
Hypericum assamicum is a species of flowering plant in the St. John's wort family, Hypericaceae. It is endemic to India. Hypericum assamicum is one of two species of Hypericum in the section Hypericum sect. Sampsonia.
Hypericum huber-morathii is a flowering plant in the family Hypericaceae, section Adenosepalum, and the type species of the Hypericum huber-morathii group.
Hypericum lobocarpum, commonly called fivelobe St. Johnswort, is a species of flowering plant in the St. Johnswort family (Hypericaceae). It is native eastern to North America, where it is found primarily in the western portion of the southeastern United States. Its typical natural habitat is in open wet areas, such as stream banks, lake margins, swamps, and pine savannas.
Hypericum aucheri, also known as Koramanotu in Turkish, is a herbaceous perennial flowering plant in the St. John's wort family Hypericaceae.
Hypericum coris, the heath-leaved St. John's wort, also called yellow coris, is a species of flowering plant in the family Hypericaceae, and is the type species of sect. Coridium. It is a low shrub, and it is found in Switzerland and northwestern Italy. The species has been a popular garden plant since the 18th century, valued for its long flowering period and for how well it adapts to cultivation.
Hypericum antiquum is an extinct species of the genus Hypericum that was present during the Eocene epoch. The species' fossils are the oldest collected of Hypericum, and it is believed that the species is the common ancestor of the tribe Hypericeae. Fossil seeds have been found in Russia, and the predicted paleoregion of the species stretched across Eurasia. It is theorized that one factor leading to the species' extinction is a global cooling at the end of the Eocene that removed much of its habitat.
Hypericum confertum is a species of flowering plant of the St. John's Wort family (Hypericaceae) which is native from Turkey to Lebanon and on the island of Cyprus.
