| Hypericum formosissimum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Section: | Hypericum sect. Adenosepalum |
| Species: | H. formosissimum |
| Binomial name | |
| Hypericum formosissimum Takht. 1940 | |
| Synonyms [1] [2] | |
| |
Hypericum formosissimum is a species of flowering plant in the family Hypericaceae, section Adenosepalum, in the Hypericum huber-morathii group.
Hypericum formosissimum was first described in Zametki Sist. Geogr. Rast. (Notes on Systematics and Geography of Plants) in 1940 by Armen Takhtajan. [3] The species was actually omitted by error from Norman Robson's comprehensive monograph of the genus Hypericum in 1981 but was later accepted as a valid species of the genus. [4] The species is an extreme development of Adenosepalum and is confined to limestone rocks, a behavior shared with the other members of the huber-morathii group. [5]
Hypericum formosissimum is a perennial herb that grows 3–10 cm (1.2–3.9 in) tall. It is glabrous (lacks hairs) and has numerous stems that are straggling and almost grow along the ground. The stems are slender, terete, brittle, and lack glands. The internodes are 3–8 mm (0.12–0.31 in) long, and most grow longer than the leaves. The leaves are 2–3 mm (0.079–0.118 in) and are petiolate (with stems).They have 3–8 mm (0.12–0.31 in) long lamina which are broadly ovate or almost circular and are a bluish-green color. The leaves have 2 lateral pairs of veins that ascend from the lower portion of the midrib and are difficult to see. The glands on the leaves are pale and dense and the intramarginal glands are black and spaced out. The species is 1-5 flowered from terminal nodes without any flowering branches below. The pedicels that hold the flowers are 1–2 mm (0.039–0.079 in)long. The bracts are small and are black and denticulate. The flowers are 10–12 mm (0.39–0.47 in) wide with rounded buds. The petals are a pale yellow and are 8 by 5 millimeters in size. The stamens number around 18-20, with the longest being around 5–6 mm (0.20–0.24 in) long. The seeds are brown and approximately 1–3 mm (0.039–0.118 in) long with linear-foveolate testa. [5]
The species flowers from June–July and fruits from July–August. [6]
The species is native to Turkey in central Anatolia as well as the Transcaucasus region, especially in Armenia and Azerbaijan. [1] It is found in fissures of limestone rocks at elevations of 1,450–1,900 m (4,760–6,230 ft) above sea level. [5]
H. formosissimum is an endangered species that occupies an area of less than 500 square kilometers. It was included in the Red Data Book of Armenia as a Rare Species (Category 2). [6]
Unlike other species in sect. Adenosepalum, H. formosissimum does not contain hypericin and pseudohypericin, but only pseudohypericin. The species contains about 0.05% content pseudohypericin. [7]
Hypericum socotranum is a species of flowering plant in the Hypericaceae family which is endemic to the island of Socotra in Yemen. Its natural habitats are subtropical or tropical dry forests and rocky areas.
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. The oval green leaves are one or two centimeters long and are covered in tiny glands. The inflorescence is a compound cyme of tiny flowers. H. mutilum subsp. mutilum and subsp. boreale have a diploid number of 16, and H. mutilum subsp. boreale can have a diploid number of 18.
Hypericum olympicum, commonly known as the Mount Olympus St. John's wort, is a species of flowering plant in the family Hypericaceae found in the Balkans and Turkey and introduced to western Europe. It has been widely cultivated for centuries because of its large, showy flowers, which are far larger than those of most other species in Hypericum.
Hypericum cuisinii is a perennial herb in the genus Hypericum, in the section Adenosepalum. The herb has pale yellow flowers and occurs in Greece and Turkey.
Hypericum undulatum, the wavy St Johns Wort, is a herbaceous perennial flowering plant native to western Europe and northern Africa. The specific name undulatum is Latin, meaning "wavy" or "undulated", referring, just as the common name, to the wavy leaf margins of the herb. The plant has a diploid number of 16 or 32.
Hypericum sect. Adenosepalum is one of 36 sections in the genus Hypericum. Its type species is Hypericum montanum.
Hypericum phellos is a species of shrub or small tree in Hypericumsect. Brathys. The species is found in Colombia and Venezuela on scrubby slopes and moist woods.
Hypericum suffruticosum, known as pineland St. John's-wort, is a species of flowering plant in the St. John's wort family, Hypericaceae. It is native to the Southeastern United States.
Hypericum denticulatum, the coppery St. John's Wort, is a perennial herb in the flowering plant family Hypericaceae. It is native to the Eastern United States. The species has two varieties, H. denticulatum var. recognitum and H. denticulatum var. acutifolium. The herb has a diploid number of 24 or 48.
Hypericum majus, the greater Canadian St. John's wort, is a perennial herb native to North America. The specific epithet majus means "larger". The plant has a diploid number of 16.
Hypericum humboldtianum is a species of shrubby flowering plant in the St. John's wort family Hypericaceae native to Colombia and Venezuela.
Hypericum sampsonii is a species of flowering plant in the St. John's wort family, Hypericaceae. It occurs in China, Taiwan, Japan, Myanmar, and Vietnam. It is one of two species of Hypericum in the section Hypericum sect. Sampsonia.
Hypericum sechmenii, commonly called seçmen kantaronu in Turkish which means Seçmen's St. John's wort in English, is a rare species of flowering plant of the St. John's wort family (Hypericaceae) that is found only in the Eskişehir Province of central Turkey. It was described by Turkish botanists Atila Ocak and Onur Koyuncu who named the species in honor of Özcan Seçmen, a fellow Turkish botanist. Found in the crevices of exposed limestone, it is a perennial herb which grows in clusters of stems 3–6 centimetres tall and blooms June to July with bright yellow five-petalled flowers. Formally described in 2009, the species was first collected in 2006 and has since been found in only two localities with an estimated population of less than 250.
Hypericum huber-morathii is a flowering plant in the family Hypericaceae, section Adenosepalum, and the type species of the Hypericum huber-morathii group.
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 harperi, the sharplobe St. Johnswort or Harper's St. John's wort, is a perennial flowering plant in the family Hypericaceae. It is an aquatic herb native to southeast North America. H. harperi has a diploid chromosome number of 24.
Hypericum vacciniifolium is a species of flowering plant in the flowering plant family Hypericaceae. It was first described by August von Hayek and Walter Siehe in the Ann. K. K. Naturhist. Hofmus. journal in 1914 from a specimen collected by Siehe in 1912.
Hypericum heterophyllum is a flowering plant in the Hypericaceae family and is the only species in Hypericum sect. Heterophylla.