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Alsophila Glaucifolia
''Alsophila glaucifolia'', Synonym (taxonomy), synonym ''Cyathea glauca'', is a species of Cyatheales, tree fern endemic (ecology), endemic to Réunion. Little is known about this species. Habitat and related species ''A. glaucifolia'' grows at higher altitudes (), and it is one of three species of Cyatheales, tree fern that are indigenous to Réunion island. * ''Alsophila celsa'' (syn. ''Cyathea excelsa'') which also occurs in Mauritius, grows at slightly lower altitudes (200-1700m). Like ''A. glaucifolia'', its leaves are tripinnate, but the new fronds of ''A. celsa'' are scaleless; those of ''A. glaucifolia'' have red-brown scales. * ''Alsophila borbonica'' (syn. ''Cyathea borbonica'') is the only species with bipinnate fronds. Image:Cyathea glauca fronds.jpg, The fronds are tripinnate (branching to three levels). Image:Cyathea glauca.JPG, Growing under ''Acacia heterophylla'' in the forest of Bélouve, Réunion Image:Image-Cyathea glauca insertion of fronds. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plaine Des Palmistes
Plaine may refer to: * Plaine (river), a tributary of the Meurthe (river), river Meurthe in France * Plaine, Bas-Rhin, a commune in Alsace in north-eastern France * Plaine-Haute, a commune in the Côtes-d'Armor department in Brittany in northwestern France * Plaine Morte Glacier, a glacier in the canton of Bern in Switzerland * Belle Plaine (other) * La Plaine (other) See also * Plain (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Réunion
Réunion (; ; ; known as before 1848) is an island in the Indian Ocean that is an overseas departments and regions of France, overseas department and region of France. Part of the Mascarene Islands, it is located approximately east of the island of Madagascar and southwest of the island of Mauritius. , it had a population of 896,175. Its capital and largest city is Saint-Denis, La Réunion, Saint-Denis. Réunion was uninhabited until French immigrants and colonial subjects settled the island in the 17th century. Its tropical climate led to the development of a plantation economy focused primarily on sugar; slaves from East Africa were imported as fieldworkers, followed by Malays, Annamite, Vietnamese, Chinese, and Indians as indentured laborers. Today, the greatest proportion of the population is of mixed descent, while the predominant language is Réunion Creole, though French remains the sole official language. Since 1946, Réunion has been governed as a regions of France, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The Botanical nomenclature, botanical and Zoological nomenclature, zoological codes of nomenclature treat the concept of synonymy differently. * In nomenclature, botanical nomenclature, a synonym is a Binomial nomenclature, scientific name that applies to a taxon that now goes by a different scientific name. For example, Carl Linnaeus, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different Binomial nomenclature, binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyatheales
The order Cyatheales, which includes most tree ferns, is a Taxonomy (biology), taxonomic order of the fern class, Polypodiopsida. No clear morphology (biology), morphological features characterize all of the Cyatheales, but DNA sequence data indicate the order is monophyly, monophyletic. Some species in the Cyatheales have tree-like growth forms from a vertical rhizome, others have shorter or horizontal expanding rhizomes. Some species have scales on the stems and leaves, while others have hairs. However, most plants in the Cyatheales are tree ferns and have trunk-like stems up to tall. It is unclear how many times the tree form has evolved and been lost in the order.Judd, W.S., C.S. Campbell, E.A. Kellogg, P.F. Stevens, and M.J. Donoghue (Eds.) 2008. Plant Systematics: A Phylogenetic Approach, Third Edition. Sinauer Associates, Sunderland, Massachusetts, USA. Description While the Cyatheales have been shown to be monophyletic through molecular analysis, no prominent morphologic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic (ecology)
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 bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauritius
Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about off the southeastern coast of East Africa, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Agaléga, and St. Brandon (Cargados Carajos shoals). The islands of Mauritius and Rodrigues, along with nearby Réunion (a French overseas department), are part of the Mascarene Islands. The main island of Mauritius, where the population is concentrated, hosts the capital and largest city, Port Louis. The country spans and has an exclusive economic zone covering approximately . The 1502 Portuguese Cantino planisphere has led some historians to speculate that Arab sailors were the first to discover the uninhabited island around 975, naming it ''Dina Arobi''. Called ''Ilha do Cirne'' or ''Ilha do Cerne'' on early Portuguese maps, the island was visited by Portuguese sailors in 1507. A Dutch fleet, under the command of Admiral Van War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tripinnate
Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and in patterns of erosion or stream beds. The term derives from the Latin word ''pinna'' meaning "feather", "wing", or "fin". A similar concept is "pectination", which is a comb-like arrangement of parts (arising from one side of an axis only). Pinnation is commonly referred to in contrast to "palmation", in which the parts or structures radiate out from a common point. The terms "pinnation" and "pennation" are cognate, and although they are sometimes used distinctly, there is no consistent difference in the meaning or usage of the two words.Jackson, Benjamin, Daydon; ''A Glossary of Botanic Terms with their Derivation and Accent''. Gerald Duckworth & Co. London, 4th ed 1928. Plants Botanically, pinnation is an arrangement of discrete stru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alsophila Borbonica
''Alsophila borbonica'', synonym ''Cyathea borbonica'', is a tree fern endemic to Mauritius and Réunion. There are several natural forms and varieties. Description It reaches a height of roughly 2 meters, with a dark, hairy, scaly trunk. Its spreading leaves are dark green fronds. Each frond has a relatively small stem ( stipe). Each leaf also divides only twice (bipinnate): * The central midrib of the frond (rachis) branches into many horizontal leaflets (pinnae). * Each pinna midrib bears many small leaflets (pinnules). Forms and distribution There are two natural Mauritian varieties, which occur mainly in the upland forest in the higher parts of the island, and are both endangered. There is one natural Reunionese variety: * ''A. borbonica var. borbonica'' (Réunion) * ''A. borbonica var. latifolia'' (Mauritius), which bears an umbrella-shaped crown * ''A. borbonica var. sevathiana'' (Mauritius), which bears a funnel-shaped crown Related species In Mauritius, they share t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bipinnate
The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). The edge of the leaf may be regular or irregular, and may be smooth or have hair, bristles, or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Heterophylla
''Acacia heterophylla'', the highland tamarind,Forestry Abstracts, University of Oxford Commonwealth Forestry Bureau, p.327, 1939 is a tree (or shrub in its higher places) Endemism, endemic to Réunion, Réunion island where it is commonly named ''tamarin des hauts'' The tree has a juvenile stage where its leaves have a pinnate arrangement, but in the adult stage the leaves diminish and the phyllode becomes the dominant photosynthetic structure. It has been introduced into Madagascar where it grows in a subhumid climate at an altitude of about 500–1000 m above sea level. Genetic sequence analysis has shown its closest relative is ''Acacia koa'' of Hawaii; the estimated time of divergence is about 1.4 million years ago. ''A. heterophylla'' sequences nest within those of the more diverse ''A. koa'', making the latter species paraphyletic. Both species are descended from an ancestral species in Australia, presumably their sister species, ''Acacia melanoxylon''; the means of disper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
