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Voacanga Grandifolia
''Voacanga grandifolia'' is a plant native to Malesia and Queensland. It is an introduced species in India. Description ''Voacanga grandifolia'' grows as a small tree and produces flowers and fruits. It produces milky exudate when cut or damaged similar to many Apocynaceae plants. Chemical composition ''Voacanga'' alkaloids are predominant alkaloid in this plant which includes Voacangine, Voacamine, Vobtusine. Voacinol is a new and intriguing stereochemically symmetrical bisindole alkaloid present in leaves along with desacetylvindoline. See also * Voacanga africana ''Voacanga africana'' is a small tree native to tropical Africa belonging to the family Apocynaceae that grows to in height and bears leaves that are up to in length. The yellow or white flowers are succeeded by paired, follicular, dehiscent f ... References {{Taxonbar, from=Q15382023 Voacanga Flora of Malesia Flora of Queensland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Friedrich Anton Wilhelm Miquel
Friedrich Anton Wilhelm Miquel (24 October 1811 – 23 January 1871) was a Dutch botanist, whose main focus of study was on the flora of the Dutch East Indies. Early life Miquel was born in Neuenhaus and studied medicine at the University of Groningen, where, in 1833, he received his doctorate. After starting work as a doctor at the Buitengasthuis Hospital in Amsterdam, in 1835, he taught medicine at the clinical school in Rotterdam. In 1838 he became correspondent of the Royal Institute, which later became the Royal Netherlands Academy of Arts and Sciences, and in 1846 he became member. He was professor of botany at the University of Amsterdam (1846–1859) and Utrecht University (1859–1871). He directed the Rijksherbarium (National Herbarium) at Leiden from 1862. In 1866, he was elected a foreign member of the Royal Swedish Academy of Sciences. Research Miquel did research on the Taxonomy (biology), taxonomy of plants. He was interested in the flora of the Dutch Empire, speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Allen Rolfe
Robert Allen Rolfe (1855, Wilford, Nottinghamshire – 1921, Richmond, Surrey) was an English botanist specialising in the study of orchids. For a time he worked in the gardens at Welbeck Abbey. He entered Kew in 1879 and became second assistant. He was the first curator of the orchid herbarium at the Royal Botanic Gardens, Kew, founded the magazine ''The Orchid Review'', and published many papers on hybrids of different species of orchids. The genus ''Allenrolfea'' of amaranths was named after him by Carl Ernst Otto Kuntze. Rolfe was buried in Richmond Cemetery Richmond Cemetery is a cemetery on Lower Grove Road in Richmond in the London Borough of Richmond upon Thames, England. The cemetery opened in 1786 on a plot of land granted by an Act of Parliament the previous year. The cemetery has been expande .... Works Rolfe, Robert Allen (1883). "On the Selagineæ described by Linnæus, Bergius, Linnæus, fil., and Thunberg." Botanical Journal of the Linnean Society 20(129): 33 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malesia
Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. It has been given different definitions. The World Geographical Scheme for Recording Plant Distributions split off Papuasia in its 2001 version. Floristic province Malesia was first identified as a floristic region that included the Malay Peninsula, the Malay Archipelago, New Guinea, and the Bismarck Archipelago, based on a shared tropical flora derived mostly from Asia but also with numerous elements of the Antarctic flora, including many species in the southern conifer families Podocarpaceae and Araucariaceae. The floristic region overlaps four distinct mammalian faunal regions. The first edition of the World Geographical Scheme for Recording Plant Distributions (WGSRPD) used this definition, but in the second edition of 2001, New Guinea and the Bismarck Archipelago were r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queensland
) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of Queensland , established_title2 = Separation from New South Wales , established_date2 = 6 June 1859 , established_title3 = Federation , established_date3 = 1 January 1901 , named_for = Queen Victoria , demonym = , capital = Brisbane , largest_city = capital , coordinates = , admin_center_type = Administration , admin_center = 77 local government areas , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 = Jeannette Young , leader_title3 = Premier , leader_name3 = Annastacia Palaszczuk ( ALP) , legislature = Parliament of Queensland , judiciary = Supreme Court of Queensland , national_representation = Parliament of Australia , national_representation_type ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Tropical Rainforest Plants
Australian Tropical Rainforest Plants, also known as RFK, is an identification key giving details—including images, taxonomy, descriptions, range, habitat, and other information—of almost all species of flowering plants (i.e. trees, shrubs, vines, forbs, grasses and sedges, epiphytes, palms and pandans) found in tropical rainforests of Australia, with the exception of most orchids which are treated in a separate key called Australian Tropical Rainforest Orchids (see External links section). A key for ferns is under development. RFK is a project initiated by the Australian botanist Bernie Hyland. History The information system had its beginnings when Hyland started working for the Queensland Department of Forestry in the 1960s. It was during this time that he was tasked with the creation of an identification system for rainforest trees, but given no direction as to its format. Having little belief in single-access keys, he began work on creating a multi-access key (or polyc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Government
The Australian Government, also known as the Commonwealth Government, is the national government of Australia, a federal parliamentary constitutional monarchy. Like other Westminster-style systems of government, the Australian Government is made up of three branches: the executive (the prime minister, the ministers, and government departments), the legislative (the Parliament of Australia), and the judicial. The legislative branch, the federal Parliament, is made up of two chambers: the House of Representatives (lower house) and Senate (upper house). The House of Representatives has 151 members, each representing an individual electoral district of about 165,000 people. The Senate has 76 members: twelve from each of the six states and two each from Australia's internal territories, the Australian Capital Territory and Northern Territory. The Australian monarch, currently King Charles III, is represented by the governor-general. The Australian Government in its executive ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voacangine
Voacangine (12-methoxyibogamine-18-carboxylic acid methyl ester) is an alkaloid found predominantly in the root bark of the ''Voacanga africana'' tree, as well as in other plants such as ''Tabernanthe iboga'', ''Tabernaemontana africana'', ''Trachelospermum jasminoides'', ''Tabernaemontana divaricata'' and ''Ervatamia yunnanensis''. It is an iboga alkaloid which commonly serves as a precursor for the semi-synthesis of ibogaine. It has been demonstrated in animals to have similar anti-addictive properties to ibogaine itself. It also potentiates the effects of barbiturates. Under UV-A and UV-B light its crystals fluoresce blue-green, and it is soluble in ethanol. Pharmacology Pharmacodynamics Voacangine exhibits AChE inhibitory activity. Docking simulation reveals that it has inhibitory effect on VEGF2 kinase and reduces angiogenesis. Like ibogaine, its a potent HERG blocker in vitro. It also acts as antagonist to TRPM8 and TRPV1 receptor but agonist of TRPA1. Pharmacokinetics The a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voacamine
Voacamine, also known under the older names voacanginine and vocamine, is a naturally occurring dimeric indole alkaloid of the secologanin type, found in a number of plants, including ''Voacanga africana'' and ''Tabernaemontana divaricata''. It is approved for use as an antimalarial drug in several African countries. Voacamine exhibits cannabinoid CB1 receptor antagonistic activity. Chemistry Structure There is considerable confusion about the absolute stereochemical configuration of voacamine and the originally published absolute structure had to be later revised. It has an ibogaine unit joined with vobasine unit. Adverse Effect Voacamine can cause hypertension in high dose. See also * Vincamine * Vobtusine Vobtusine is an alkaloid found in several different plants in the genus ''Voacanga ''Voacanga'' is a genus of plants in the family Apocynaceae found in Africa, Southeast Asia, New Guinea, and Australia. the World Checklist of Selected Plant Fa ... References {{R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vobtusine
Vobtusine is an alkaloid found in several different plants in the genus ''Voacanga''. See also *Apparicine *Affinisine *Voacamine *Lochnericine Lochnericine is a major monoterpene indole alkaloid present in the roots of ''Catharanthus roseus''. It is also present in ''Tabernaemontana divaricata''. Chemistry Synthesis Lochnericine is formed from stereoselective epoxidation of carbons ... References {{Reflist Indole alkaloids Alkaloids found in Apocynaceae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voacanga Africana
''Voacanga africana'' is a small tree native to tropical Africa belonging to the family Apocynaceae that grows to in height and bears leaves that are up to in length. The yellow or white flowers are succeeded by paired, follicular, dehiscent fruit with a mottled green exocarp and a pulpy, yellow mesocarp surrounding the seeds. The plant contains alkaloids acting as CNS depressants and hypotensives Description ''Voacanga africana'' is a small tree up to tall with a spreading crown. The leaves are in opposite pairs, dark glossy green above and paler green below. The white or yellow flowers are in small bunches borne either in leaf axils or at the end of shoots. The spherical, dark green fruits, dappled with paler green, grow usually in pairs and contain seeds embedded in a yellow pulp. History ''Voacanga africana'' was named by botanist Otto Stapf in 1894 after he received a type specimen from George Scott-Elliot, who had been participating in the Sierra Leone Boundary Commi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voacanga
''Voacanga'' is a genus of plants in the family Apocynaceae found in Africa, Southeast Asia, New Guinea, and Australia. the World Checklist of Selected Plant Families recognises 13 species:Search for "Voacanga", ;Species # ''Voacanga africana'' Stapf ex Scott-Elliot - tropical W + C + E + S Africa # ''Voacanga bracteata'' Stapf - tropical W + C Africa # ''Voacanga caudiflora'' Stapf - tropical W Africa # ''Voacanga chalotiana'' Pierre ex Stapf - tropical C Africa # ''Voacanga foetida'' ( Blume) Rolfe -Java, Borneo, Sumatra, Philippines # ''Voacanga globosa'' (Blanco) Merr. - Philippines # ''Voacanga gracilipes'' (Miq.) Markgr. - Maluku # ''Voacanga grandifolia'' (Miq.) Rolfe - Indonesia, Philippines, New Guinea, Queensland # ''Voacanga havilandii'' Ridl. - Sarawak # ''Voacanga megacarpa'' Merr. - Philippines # ''Voacanga pachyceras'' Leeuwenb. - Zaïre # ''Voacanga psilocalyx'' Pierre ex Stapf - Nigeria, Cameroon, Gabon, Republic of Congo # ''Voacanga thouarsii'' Roem. & S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Malesia
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 Phyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
