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Cyathea Glauca
''Alsophila glaucifolia'', synonym ''Cyathea glauca'', is a species of tree fern 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 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.JPG, Detail of trunk and insertion of fronds. New growth is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plaine Des Palmistes
{{disambiguation ...
Plaine may refer to: * Plaine (river), a tributary of the 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) A plain is a flat, sweeping landmass. Plain may also refer to: Places * Plain, Texas, U.S. * Plain, Washington, U.S. * Plain, Wisconsin, U.S. * Plain City (other), several places * Plain Township (other), several places Music ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Réunion
Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island of Madagascar and southwest of the island of Mauritius. , it had a population of 868,846. Like the other four overseas departments, Réunion also holds the status of a region of France, and is an integral part of the French Republic. Réunion is an outermost region of the European Union and is part of the eurozone. Réunion and the fellow French overseas department of Mayotte are the only eurozone regions located in the Southern Hemisphere. As in the rest of France, the official language of Réunion is French. In addition, a majority of the region's population speaks Réunion Creole. Toponymy When France took possession of the island in the seventeenth century, it was named Bourbon, after the dynasty that then ruled France. To break ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, 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 binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyatheales
The order Cyatheales, which includes most tree ferns, is a taxonomic order of the fern class, Polypodiopsida. No clear morphological features characterize all of the Cyatheales, but DNA sequence data indicate the order is 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 morphological characteristics are common to the entire group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic (ecology)
Endemism is the state of a species being found 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 be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauritius
Mauritius ( ; french: Maurice, link=no ; mfe, label=Mauritian Creole, Moris ), officially the Republic of Mauritius, is an island nation in the Indian Ocean about off the southeast coast of the African continent, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Agaléga and St. Brandon. 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 most of the population is concentrated, hosts the capital and largest city, Port Louis. The country spans and has an exclusive economic zone covering . Arab sailors were the first to discover the uninhabited island, around 975, and they called it ''Dina Arobi''. The earliest discovery was in 1507 by Portuguese sailors, who otherwise took little interest in the islands. The Dutch took possession in 1598, establishing a succession of short-lived settlements over a period of about ... [...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; Published by Gerald Duckworth & Co. London, 4th ed 1928 Plants Botanically, pinnation is an arrangement of discre ... [...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 shar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bipinnate
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing 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 "acuminate", "lanceolate", or "linear" could ... [...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) endemic to 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 dispersal to Hawaii and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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