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Myristica Dactyloides
''Myristica dactyloides'' is a species of plant in the family Myristicaceae. It is endemic to Sri Lanka. The species was earlier thought to occur in India because two subspecies of the related '' Myristica beddomei'' found in India, namely ''M. b. beddomei'' and ''M. b. ustulata,'' were wrongly identified as ''M. dactyloides'' Gaertn. in many herbarium specimens and regional floras. Taxonomy ''Myristica dactyloides'' differs from the Indian taxon ''M. beddomei'' in leaf and flower characteristics. The former has broadly lanceolate to broadly elliptic leaves with obtuse base, being brownish with indistinct veins on the underside. The male flowers have caducous bracteoles and the male flower buds are distinctly ellipsoid with pointed apex. Some sources have it as a synonym of ''Myristica malabarica ''Myristica malabarica'' is a species of plant in the family Myristicaceae. It is endemic to the Western Ghats in southwest India. It is threatened by habitat loss according to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Gaertner
Joseph Gaertner (12 March 1732 – 14 July 1791) was a German botanist, best known for his work on seeds, ''De Fructibus et Seminibus Plantarum'' (1788-1792). Biography He was born in Calw, and studied in Göttingen under Albrecht von Haller. He was primarily a naturalist, but also worked at physics and zoology. He travelled extensively to visit other naturalists. He was professor of anatomy in Tübingen in 1760, and was appointed professor of botany at St Petersburg in 1768, but returned to Calw in 1770. Gaertner made back cross to convert one species into another. Back cross increases nuclear gene frequency His observations were: 1. Dominance of traits 2. Equal contribution of male and female to the progeny 3. No variation in F1 (first generation of descendants) 4. Large variation in F2 (second generation of descendants) including parental and intermediate types 5. Some of F2 plants had entirely new traits but he was unable to give possible explanation for observ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myristicaceae
The Myristicaceae are a family of flowering plants native to Africa, Asia, Pacific islands, and the Americas and has been recognized by most taxonomists. It is sometimes called the "nutmeg family", after its most famous member, ''Myristica fragrans'', the source of the spices nutmeg and mace. The best known genera are ''Myristica'' in Asia and ''Virola'' in the Neotropics. The family consists of about 21 genera with about 520 species of trees, shrubs and rarely lianas ('' Pycnanthus'') found in tropical forests around the world. Most of the species are large trees that are valued in the timber industry. Description They are typically trees with reddish sap and distinctive pagoda-like growth (known as myristicaceous branching) in which horizontal branching only occurs at certain nodes along the main axis of the trunk, each node separated by a large gap where no branching occurs. All genera are dioecious, except ''Endocomia'' and some ''Iryanthera''. The inner bark is usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sri Lanka
Sri Lanka (, ; si, ශ්රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, and southeast of the Arabian Sea; it is separated from the Indian subcontinent by the Gulf of Mannar and the Palk Strait. Sri Lanka shares a maritime border with India and Maldives. Sri Jayawardenepura Kotte is its legislative capital, and Colombo is its largest city and financial centre. Sri Lanka has a population of around 22 million (2020) and is a multinational state, home to diverse cultures, languages, and ethnicities. The Sinhalese are the majority of the nation's population. The Tamils, who are a large minority group, have also played an influential role in the island's history. Other long established groups include the Moors, the Burghers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myristica Beddomei
''Myristica beddomei'' is a species of tree in the family Myristicaceae. It is endemic to the Western Ghats, India, where it is frequent in the mid-elevation wet evergreen forests and an important food tree of hornbills. The species has been earlier misidentified in regional floras and herbarium specimens as ''Myristica dactyloides'' Gaertn., the latter occurring only in Sri Lanka. Description Canopy and sub-canopy trees in tropical wet evergreen forests, growing up to 25 m high. The trees have a smooth blackish green bark that peels off. Inner bark is deep red and when exposed or blazed produces a red exudate. The cylindrical branches are arranged in whorls around the trunk and are held horizontally almost perpendicular to the main trunk. The leaves are simple, alternate, and arranged in rows on opposite sides of the twigs (distichous) with a hairless petiole about 1.5 cm to 4 cm long that has a groove along the top ( canaliculate). The leaf blade is thick and leathery, shinin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myristica Malabarica
''Myristica malabarica'' is a species of plant in the family Myristicaceae. It is endemic to the Western Ghats in southwest India. It is threatened by habitat loss according to the IUCN Red List. It can reach up to 25 m long and its bark is greenish black, smooth and sometimes reddish. Names in local languages: Kattujathi (literally wild nutmeg), Kattujathikka, Kottappannu, Panampalka, Pathiripoovu, Ponnampannu, Ponnampayin, and Ponnampu in Malayalam; Kanage, and Doddajajikai in Kannada; Rampatri in Hindi. It is used in Ayurvedic medicine. ''M. malabarica'' is used to adulterate true nutmeg, which comes from ''Myristica fragrans ''Myristica fragrans'' is an evergreen tree indigenous to the Maluku Islands of Indonesia. It is important as the main source of the spices nutmeg and mace. It is widely grown across the tropics including Guangdong and Yunnan in China, Taiwan, I ...''. Both '' Myristica magnifica'' and ''M. malabarica'' are endangered trees that are n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myristica Dactyloides 14
''Myristica'' is a genus of trees in the family Myristicaceae. There are over 150 species, distributed in Asia and the western Pacific. The type species of the genus, and the most economically important member, is ''Myristica fragrans'' (the nutmeg tree), from which mace is also derived. Etymology The name ' is from the Greek adjective , meaning ‘fragrant, for anointing’, referring to its early use. The adjective is from the noun (‘perfume, ointment, anointing oil’). Description All or nearly all species are dioecious. Knuth (1904) however cites a report of trees being male in their sex expression when young and female later. Perianth of one whorl of three largely united segments. Stamens two to thirty, partly or wholly united. The ovary is superior, consisting of a single uniovulate carpel.Secondary Pollen Presentation. page 7. Peter Yeo 1993 Species in this genus use secondary pollen presentation (pollen presentation in the flower which does not use an anther), t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myristica
''Myristica'' is a genus of trees in the family Myristicaceae. There are over 150 species, distributed in Asia and the western Pacific. The type species of the genus, and the most economically important member, is ''Myristica fragrans'' (the nutmeg tree), from which mace is also derived. Etymology The name ' is from the Greek adjective , meaning ‘fragrant, for anointing’, referring to its early use. The adjective is from the noun (‘perfume, ointment, anointing oil’). Description All or nearly all species are dioecious. Knuth (1904) however cites a report of trees being male in their sex expression when young and female later. Perianth of one whorl of three largely united segments. Stamens two to thirty, partly or wholly united. The ovary is superior, consisting of a single uniovulate carpel.Secondary Pollen Presentation. page 7. Peter Yeo 1993 Species in this genus use secondary pollen presentation (pollen presentation in the flower which does not use an anther), t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservation Dependent Plants
Conservation is the preservation or efficient use of resources, or the conservation of various quantities under physical laws. Conservation may also refer to: Environment and natural resources * Nature conservation, the protection and management of the environment and natural resources * Conservation biology, the science of protection and management of biodiversity * Conservation movement, political, environmental, or social movement that seeks to protect natural resources, including biodiversity and habitat * Conservation organization, an organization dedicated to protection and management of the environment or natural resources * Wildlife conservation, the practice of protecting wild species and their habitats in order to prevent species from going extinct * ''Conservation'' (magazine), published by the Society for Conservation Biology from 2000 to 2014 ** ''Conservation Biology'' (journal), scientific journal of the Society for Conservation Biology Physical laws * Conser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Sri Lanka
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] |
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