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Phycolepidozia Exigua
''Phycolepidozia exigua'' is a species of liverwort in the family Cephaloziellaceae. It was thought to be the only species in the genus until a new species from India, ''Phycolepidozia indica'', was found in 2014. ''Phycolepidozia exigua'' is endemic to Dominica, where it is critically endangered. Its natural habitat is subtropical or tropical moist lowland forest A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...s. The species is unique among the leafy liverworts in the extreme reduction of its lateral leaves. These leaves consist of only two cells at maturity, so that plants are essentially leafless. References External links Jungermanniales Critically endangered plants Endemic flora of Dominica Taxonomy articles created by Polbot {{Bryophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marchantiophyta
Liverworts are a group of non-vascular plant, non-vascular embryophyte, land plants forming the division Marchantiophyta (). They may also be referred to as hepatics. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information. The division name was derived from the genus name ''Marchantia'', named after his father by French botanist Jean Marchant. It is estimated that there are about 9000 species of liverworts. Some of the more familiar species grow as a flattened leafless thallus, but most species are leafy with a form very much like a flattened moss. Leafy species can be distinguished from the apparently similar mosses on the basis of a number of features, including their single-celled rhizoids. Leafy liverworts also differ from most (but not all) mosses in that their leaves never have a costa (botany), costa (present in many mosses) and may bear marginal cilia (botany), cilia (very rare i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephaloziellaceae
Cephaloziellaceae is a family of liverworts belonging to the order Jungermanniales. Genera As accepted in 2016 (with the number of species in parentheses): *''Allisoniella'' E.A.Hodgs. (5) *''Amphicephalozia'' R.M.Schust. (3) *''Anastrophyllopsis'' (R.M.Schust.) Vána & L.Söderstr. (3) *''Cephalojonesia'' Grolle (1, ''C. incuba'' ) *''Cephalomitrion'' R.M.Schust. (1, ''C. aterrimum'' ) *''Cephaloziella'' (Spruce) Schiffn. (112) *''Cephaloziopsis'' (Spruce) Schiffn. (5) *''Chaetophyllopsis'' R.M.Schust. (1, ''C. whiteleggei'' ) *''Cylindrocolea'' R.M.Schust. (23) *''Gottschelia'' Grolle (5) *''Gymnocoleopsis'' (R.M.Schust.) R.M.Schust. (3) *''Herzogobryum'' Grolle (6) *''Kymatocalyx'' Herzog (5) *''Lophonardia'' R.M.Schust. (4) *''Nothogymnomitrion'' R.M.Schust. (1, ''N. erosum'' ) *''Obtusifolium'' S.W.Arnell (1, ''O. obtusum'' ) *''Oleolophozia'' L.Söderstr., De Roo & Hedd. (1, ''O. perssonii'' ) *''Phycolepidozia'' R.M.Schust. (2) *''Protolophozia'' (R.M.Schust.) Schljakov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phycolepidozia Indica
''Phycolepidozia'' is a genus of liverwort in the family Cephaloziellaceae Cephaloziellaceae is a family of liverworts belonging to the order Jungermanniales. Genera As accepted in 2016 (with the number of species in parentheses): *''Allisoniella'' E.A.Hodgs. (5) *''Amphicephalozia'' R.M.Schust. (3) *''Anastrophyllops .... It contains two species: *'' Phycolepidozia exigua'' R.M.Schust. *'' Phycolepidozia indica'' Gradst., J.-P.Frahm & U.Schwarz References Jungermanniales Jungermanniales genera {{Bryophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
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 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 larger area or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominica
Dominica, officially the Commonwealth of Dominica, is an island country in the Caribbean. It is part of the Windward Islands chain in the Lesser Antilles archipelago in the Caribbean Sea. The capital, Roseau, is located on the western side of the island. Dominica's closest neighbours are two Special member state territories and the European Union, constituent territories of the European Union, both overseas departments of France: Guadeloupe to the northwest and Martinique to the south-southeast. Dominica comprises a land area of , and the highest point is Morne Diablotins, at in elevation. The population was 71,293 at the 2011 census. The island was settled by the Arawak arriving from South America in the fifth century. The Kalinago displaced the Arawak by the 15th century. Christopher Columbus is said to have passed the island on Sunday, 3 November 1493. It was later colonised by Europeans, predominantly by the French from the 1690s to 1763. The French trafficked slaves from W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as Biophysical environment, environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and Luminous intensity, light intensity. Biotic index, Biotic factors include the availability of food and the presence or absence of Predation, predators. Every species has particular habitat requirements, habitat generalist species are able to thrive in a wide array of environmental conditions while habitat specialist species require a very limited set of factors to survive. The habitat of a species is not necessarily found in a ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest
A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' Food and Agriculture Organization (FAO) defines a forest as, "Land spanning more than 0.5 hectares with trees higher than 5 meters and a Canopy (biology), canopy cover of more than 10 percent, or trees able to reach these thresholds ''in situ''. It does not include land that is predominantly under agricultural or urban use." Using this definition, ''Global Forest Resources Assessment (FRA), Global Forest Resources Assessment 2020'' found that forests covered , or approximately 31 percent of the world's land area in 2020. Forests are the largest Terrestrial ecosystem, terrestrial ecosystems of Earth by area, and are found around the globe. 45 percent of forest land is in the Tropical forest, trop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jungermanniales
Jungermanniales is the largest Order (biology), order of Marchantiophyta, liverworts. They are distinctive among the liverworts for having thin leaf-like flaps on either side of the stem. Most other liverworts are thalloid, with no leaves. Due to their dorsiventral organization and scale-like, overlapping leaves, the Jungermanniales are sometimes called "scale-mosses". Families of Jungermanniales An updated classification by Söderström et al. 2016 * Cephaloziineae Schljakov [Jamesoniellineae] ** Adelanthaceae Grolle 1972 [Jamesoniellaceae He-Nygrén et al. 2006] ** Anastrophyllaceae Söderström et al. 2010b ** Cephaloziaceae Walter Migula, Migula 1904 ** Cephaloziellaceae Douin 1920 [Phycolepidoziaceae Schuster 1967] ** Lophoziaceae Cavers 1910 ** Scapaniaceae Migula 1904 [Diplophyllaceae Potemk. 1999; Chaetophyllopsaceae Schuster 1960] * Jungermanniineae Schuster ex Stotler & Crandall-Stotler 2000 [Geocalycineae Schuster 1972] ** Acrobolbaceae Hodgson 1962 ** Antheliaceae Sch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Dominica
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 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 larger area or becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
