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Hypericum Tertiaerum
''Hypericum tertiaerum'' is an extinct species of the genus ''Hypericum''. Seeds of ''H. tertiaerum'' have been found in Central and Eastern Europe and Siberia, and date from the Lower to Upper Miocene and the Pliocene The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58 While it has sufficient identifying characteristics to place it within ''Hypericum'', there is not enough surviving detail to assign it to any subdivisions within the genus. However, it has been determined that the seeds of '' H. japonicum'', '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinction
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum
''Hypericum'' is a genus of flowering plants in the family (biology), family Hypericaceae (formerly considered a subfamily of Clusiaceae). 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 America and eastern Asia are generally accepted as belonging to the separate genus ''Triadenum'' Raf. ''Hypericum'' is unusual for a genus of its size because a worldwide taxonomic monograph was produced for it by Norman Robson (botanist), Norman Robson (working at the Natural History Museum, London). Robson recognizes 36 sections within ''Hypericum''. Description ''Hypericum'' species are quite variable in habit, occurring as trees, shrubs, annuals, and perennials. Trees in the sense of single stem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siberia
Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states since the lengthy conquest of Siberia, which began with the fall of the Khanate of Sibir in 1582 and concluded with the annexation of Chukotka in 1778. Siberia is vast and sparsely populated, covering an area of over , but home to roughly a quarter of Russia's population. Novosibirsk, Krasnoyarsk, and Omsk are the largest cities in the area. Because Siberia is a geographic and historic concept and not a political entity, there is no single precise definition of its territorial borders. Traditionally, Siberia spans the entire expanse of land from the Ural Mountains to the Pacific Ocean, with the Ural River usually forming the southernmost portion of its western boundary, and includes most of the drainage basin of the Arctic Ocean. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anales Del Jardín Botánico De Madrid
The Annals of the Botanical Garden of Madrid (, abbreviation Anales Jard. Bot. Madrid) is a Spanish publication specialized in botany. See also * Real Jardín Botánico de Madrid * Open access in Spain Open or OPEN may refer to: Music * Open (band), Australian pop/rock band * The Open (band), English indie rock band * ''Open'' (Blues Image album), 1969 * ''Open'' (Gerd Dudek, Buschi Niebergall, and Edward Vesala album), 1979 * ''Open'' (Go ... References External linksIPNI Botany journals Academic journals established in 1941 1941 establishments in Spain Spanish-language magazines {{botany-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Systematic Biology
Systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: phylogenetic trees, phylogenies). Phylogenies have two components: branching order (showing group relationships, graphically represented in cladograms) and branch length (showing amount of evolution). Phylogenetic trees of species and higher taxa are used to study the evolution of traits (e.g., anatomical or molecular characteristics) and the distribution of organisms (biogeography). Systematics, in other words, is used to understand the evolutionary history of life on Earth. The word systematics is derived from the Latin word of Ancient Greek origin '' systema,'' which means systematic arrangement of organisms. Carl Linnaeus used 'Systema Naturae' as the title of his book. Branches and applications In the study of biological systematics, researchers use the different branch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum Japonicum
''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''. Description ''H. japonicum'' is unusually small for a St. John's wort, growing only tall. Its stems are green and 4-angled, with long internodes that usually exceed the leaves. The leaves are sessile and spreading and are persistent. The species is 30-flowered with flowers branching from up to three nodes. The flowers are in diameter and their petals are bright yellow or orange. The species' stamens number 5–30 in irregular groups or in five groups when few in number. Its seeds are approximately long. The species flowers primarily from October–March. The seeds of ''H. japonicum'' closely resemble those of the extinct paleospecies ''Hypericum tertiaerum ''Hypericum tertiaerum'' is an extinct species of the genus ''Hypericum''. Seeds of ''H. tertiaerum'' have been found in Central and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum Virginicum
''Hypericum virginicum'', the marsh St. Johns-wort or Virginia marsh St. Johnswort, is a species of flowering plant in the family Hypericaceae. It is native to the central and eastern United States and eastern Canada. Description ''Hypericum virginicum'' is a small herbaceous plant growing up to in height. Its leaves are sessile and opposite, sometimes clasping. The flowers grow up to in diameter, with 5 pink or white petals. It flowers in the summer to early fall and grows in bogs, wet meadows, fens, swamps, and along lakeshores. It can be distinguished from the closely related '' Hypericum fraseri'' by its longer, acute sepals, and longer styles. The seeds of ''H. virginicum'' closely resemble those of the extinct paleospecies '' Hypericum tertiaerum''. Taxonomy Alexander Garden first observed this plant in 1754, but following correspondence with Jane Colden realized that she had previously collected and recorded the same species in 1753, one year before his discovery. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypericum Tubulosum
''Hypericum tubulosum'', the lesser marsh St. Johnswort or southern marsh St. John's-wort, is a species of flowering plant in the family Hypericaceae. Formerly classified as synonym ''Triadenum tubulosum'', the species is found across the Southern United States and Midwest. It grows in wetlands such as bogs and floodplains. Description Lesser marsh St. Johnswort is a perennial herb that grows to approximately tall. Its pink flowers bloom in August and September. The seeds of ''H. tubulosum'' closely resemble those of the extinct paleospecies ''Hypericum tertiaerum ''Hypericum tertiaerum'' is an extinct species of the genus ''Hypericum''. Seeds of ''H. tertiaerum'' have been found in Central and Eastern Europe and Siberia, and date from the Lower to Upper Miocene and the Pliocene The Pliocene ( ; also ...''. References tubulosum {{Hypericum-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
