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Pteroceltis
''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species ''Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includes species described from Korea, Japan, Germany, and the United States. The fossil record includes one described species from North America, ''Pteroceltis knowltoni'' from the Middle Eocene Cockfield Formation in Tennessee, while an undescribed species is known from the Klondike Mountain Formation of Washington. One late Oligocene species ''Pteroceltis tertiaria'' has been described from strata near Rott, Germany. The largest diversity of fossils are from Asia, with ''Pteroceltis shanwangensis'' from the Miocene Shanwang flora in China, the Abura flora of Japan preserved ''Pterocarya ezoana'', and both ''Pteroceltis taoae'' plus ''Pteroceltis kungshimensis'' known from the Miocene Hoengyeong Formation in North Korea. References {{ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteroceltis Knowltoni
''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species '' Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which includes species described from Korea, Japan, Germany, and the United States. The fossil record includes one described species from North America, '' Pteroceltis knowltoni'' from the Middle Eocene Cockfield Formation in Tennessee, while an undescribed species is known from the Klondike Mountain Formation of Washington. One late Oligocene species '' Pteroceltis tertiaria'' has been described from strata near Rott, Germany. The largest diversity of fossils are from Asia, with '' Pteroceltis shanwangensis'' from the Miocene Shanwang flora in China, the Abura flora of Japan preserved '' Pterocarya ezoana'', and both '' Pteroceltis taoae'' plus ''Pteroceltis kungshimensis ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteroceltis Tatarinowii
''Pteroceltis tatarinowii'' a species of tree endemic to China and the only extant member of the genus ''Pteroceltis ''Pteroceltis'' is a genus of small trees in the family Cannabaceae and containing the living species ''Pteroceltis tatarinowii''. The genus is now restricted to an endemic range in China and Mongolia. The genus has a fossil record which include ...''. Common names include blue sandalwood, wingceltis, Tatar-wingceltis or qing tan (). Trees grow to tall and are used for timber, the bark fiber to make Xuan paper, and oil is extracted from its seeds. Seeds were collected and brought to America by Frank Meyer and given to the USDA in 1907. One of those seeds grew into a mature tree at the Morris Arboretum outside of Philadelphia, PA. Gallery File:Leaf Detail of Pteroceltis tatarinowii.jpg, Leaf detail of Pteroceltis tatarinowii. File:Image of a whole tree specimen of Pteroceltis tatarinowii.jpg, Another view of the specimen at the Morris Arboretum. File:Pte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannabaceae
Cannabaceae is a small family of flowering plants, known as the hemp family. As now circumscribed, the family includes about 170 species grouped in about 11 genera, including '' Cannabis'' (hemp), '' Humulus'' (hops) and '' Celtis'' (hackberries). ''Celtis'' is by far the largest genus, containing about 100 species.Stevens, P.F. (2001 onwards"Cannabaceae" ''Angiosperm Phylogeny Website'', retrieved 2014-02-25 Cannabaceae is a member of the Rosales. Members of the family are erect or climbing plants with petalless flowers and dry, one-seeded fruits. Hemp (''Cannabis'') and hop (''Humulus'') are the most economically important species. Other than a shared evolutionary origin, members of the family have few common characteristics; some are trees (e.g. ''Celtis''), others are herbaceous plants (e.g. ''Cannabis''). Description Members of this family can be trees (e.g. '' Celtis''), erect herbs (e.g. '' Cannabis''), or twining herbs (e.g. '' Humulus''). Leaves are often more or l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shanwang Flora
The Shanwang National Geology Park () is located in central Shandong province, People's Republic of China, about from Linqu County. It has an area of about . The Park is well known for the fossil bearing Shanwang Formation diatomitic deposits, one of only a few such deposits in China. It is also well known for its volcanic topography. The Shanwang Formation dates to about 18-11 million years ago, from the Langhian to the Serravallian. Fossils The fossils are found in the early-mid 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 mea ... Shanwang Formation diatomite beds and are approximately 17 million years old. They are noted for the prolific number of specimens found and the diversity of the species recovered, as well as the remarkable state of their preservation. The fine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of China
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are Indigenous (ecology), indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trees Of China
In botany, a tree is a perennial plant with an elongated Plant stem, stem, or trunk (botany), trunk, usually supporting Branch, branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only Bark (botany), woody plants with secondary growth, only plants that are usable as lumber, or only plants above a specified height. But wider definitions include taller Arecaceae, palms, Cyatheales, tree ferns, Musa (genus), bananas, and bamboos. Trees are not a Monophyletic group, monophyletic taxonomic group but consist of a wide variety of plant species that Convergent evolution, have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some trees reaching several thousand years old. Trees evolved around 400 million years ago, and it is estimated that there are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1873
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
