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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] |
Nicaise Auguste Desvaux
Nicaise Auguste Desvaux (28 August 1784 – 12 July 1856) was a French botanist. From 1816 he taught classes in Angers, where from 1817 to 1838 he served as director of its botanical garden. He described the botanical genera ''Neslia'', ''Mycenastrum'', ''Rostkovia'' and ''Didymoglossum''. The genus '' Desvauxia'' is named in his honor. Works *''Journal de Botanique, appliquée à l'Agriculture, à la Pharmacie, à la Médecine et aux Arts'' (1813-1815, 4 volumes). *''Observations sur les plantes des environs d'Angers'' (1818). *''Flore de l'Anjou ou exposition méthodique des plantes du département de Maine et Loire et de l’ancien Anjou'' (1827). *''Prodrome de la famille des fougères'' (1827). *''Sur le genre Mycenastrum'', In: Annales des Sciences Naturelles Botanique, Série 2 17: 143- 47(1842). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinnule
A leaflet (occasionally called foliole) in botany is a leaf-like part of a compound leaf. Though it resembles an entire leaf, a leaflet is not borne on a main plant stem or branch, as a leaf is, but rather on a petiole or a branch of the leaf. Compound leaves are common in many plant families and they differ widely in morphology. The two main classes of compound leaf morphology are palmate and pinnate. For example, a ''hemp'' plant has palmate compound leaves, whereas some species of ''Acacia'' have pinnate leaves. The ultimate free division (or leaflet) of a compound leaf, or a pinnate subdivision of a multipinnate leaf is called a pinnule or pinnula. Image:Ветвь акации.jpg, Pinnate leaf of a legume with 10 leaflets Image:Mimosa Pudica.gif, ''Mimosa pudica'' folding leaflets inward. See also * Compound leaf A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosyn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Mauritius
The wildlife of Mauritius consists of its flora and fauna. Mauritius is located in the Indian Ocean to the east of Madagascar. Due to its isolation, it has a relatively low diversity of wildlife; however, a high proportion of these are endemic species occurring nowhere else in the world. Many of these are now threatened with extinction because of human activities including habitat destruction and the introduction of non-native species. Some have already become extinct, most famously the dodo which disappeared in the 17th century. Fauna Mammals Due to its isolated geographic location, remote from large land masses, Mauritius originally had no terrestrial mammals. The only mammals that made their way to the island are bats and marine mammals. Of the two fruit bats, only one remains – the Mauritian flying fox. Two insectivorous microbats also remain. A number of mammals have been introduced either accidentally or intentionally, including rats, mice, tenrecs, mongooses, rusa d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Réunion
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms ''gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de Phy ... [...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 Glaucifolia
''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 cov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaeropteris Cooperi
''Sphaeropteris cooperi'', synonym ''Cyathea cooperi'', also known as lacy tree fern, scaly tree fern, or Cooper's tree fern, is a tree fern native to Australia, in New South Wales and Queensland. Description ''Sphaeropteris cooperi'' is a medium-to-large fast growing tree fern, to in height with a thick trunk. The apex of the trunk and unfurling crosiers are particularly attractive, covered as they are with conspicuous long, silky, straw colored scales. The crown is widely spread and the light green fronds may reach a length of . It can also very rarely be found in the colour of a pale pink with an orange stripe going down the middle. This is extremely rare and can be worth about 2,000 dollars. Cultivation ''Sphaeropteris cooperi'' is one of the most commonly cultivated tree ferns as an ornamental plant. It is used in gardens and public landscaping. It is hardy and easy to grow. Heavy frosts may kill the fronds, but plants recover quickly. The plant prefers protected, sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frond
A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists allow the term frond to also apply to the large leaves of cycads, as well as palms (Arecaceae) and various other flowering plants, such as mimosa or sumac. "Frond" is commonly used to identify a large, compound leaf, but if the term is used botanically to refer to the leaves of ferns and algae it may be applied to smaller and undivided leaves. Fronds have particular terms describing their components. Like all leaves, fronds usually have a stalk connecting them to the main stem. In botany, this leaf stalk is generally called a petiole, but in regard to fronds specifically it is called a stipe, and it supports a flattened blade (which may be called a lamina), and the continuation of the stipe into this portion is called the rachis. The blades may be simple (undivided), pinnatifid ( ... [...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] |
