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Goniothalamus Tenuifolius
''Goniothalamus tenuifolius'' is a species of plant in the family Annonaceae. It is native to Peninsular Malaysia, Thailand and Vietnam. George King (botanist), George King, the British botanist who first species description, formally described the species, named it after its slender ( in Latin) leaved ( in Latin) foliage. Description It is a bush reaching 1.8-2.4 meters in height. Its young branches are hairless and dark colored. Its petiole (botany), petioles are 5.1 millimeter long. Its slender, membranous, oblong to lance-shaped leaves are 11.4-17.8 by 2.5-4.4 centimeters with short tapering tips and pointed bases. Its leaves have 8-11 pairs of secondary veins emanating from their midribs. Its drooping, solitary flowers are born on pedicel (botany), pedicels in axillary bud, axillary positions. The pedicels are 0.9-1.1 centimeters long with 2 basal bracts. Its membranous, hairless, oval, green sepal are 0.7–1.9 by 0.5–1.5 centimeters with pointed to tapering tips. Its flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George King (botanist)
Sir George King (12 April 1840 – 12 February 1909) was a British botanist who was appointed superintendent of the Royal Botanic Garden, Calcutta in 1871, and became the first Director of the Botanical Survey of India from 1890. He was recognised for his work in the cultivation of cinchona and for setting up a system for the inexpensive distribution of quinine throughout India through the postal system. Early life George was born in Peterhead, Aberdeenshire, to Robert King and Cecilia Anderson. Robert King was a bookseller who moved to Aberdeen to partner with his brothers who were also in the book business. One brother Arthur was the founder of the Aberdeen University Press. Another brother George was an antiquarian, founder of a local liberal newspaper and a prominent writer on economic and social matters. King's parents both died from phthisis (tuberculosis), the father in November 1845 aged thirty six and the mother in 1850 at the age of forty. Orphaned at the age of ten, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sepal
A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined by Noël Martin Joseph de Necker in 1790, and derived . Collectively the sepals are called the calyx (plural calyces), the outermost whorl of parts that form a flower. The word ''calyx'' was adopted from the Latin ,Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 not to be confused with 'cup, goblet'. ''Calyx'' is derived from Greek 'bud, calyx, husk, wrapping' ( Sanskrit 'bud'), while is derived from Greek 'cup, goblet', and the words have been used interchangeably in botanical Latin. After flowering, most plants have no more use for the calyx which withers or becomes vestigial. Some plants retain a thorny calyx, either dried or live, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Vietnam
The wildlife of Vietnam is rich in flora and fauna as reflected by its unique biodiversity. Rare and endemic antelope-like animal, categorized under the bovine subfamily, was found in 1992, in Bạch Mã National Park. In the 1990s, three other large mammal species, the deer-like Truong Son muntjac, giant muntjac and Pu Hoat muntjac, were also discovered, the first two in the same park. Conservation protection and scientific studies of the ecology of Vietnam, particularly in the protected forest areas, have been given priority attention by the Government of Vietnam. Laws were enacted to set up Xuân Thủy Wetland National Park, four UNESCO Biosphere Reserves, and Hạ Long Bay and Phong Nha-Kẻ Bàng National Parks; the last two are also designated as UNESCO World Heritage Sites. The rich diversity of Vietnam's wildlife includes 11,400 species of vascular plants, 1030 species of moss, 310 species of mammals, 296 reptile species, 162 amphibian species, 700 freshwater species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Thailand
''Flora of Thailand'' is a multi-volume flora describing the vascular plants of Thailand, published by the Forest Herbarium, Royal Forest Department since the 1970s. It currently consists of 12 volumes. Volumes *Volume 1 – not yet published *Volume 2(1-4) – Actinidiaceae, Apostasiaceae, Balanophoraceae, Bonnetiaceae, Cannabidaceae, Cardiopteridaceae, Casuarinaceae, Centrolepidaceae, Cephalotaxaceae, Connaraceae, Cupressaceae, Cycadaceae, Dilleniaceae, Ebenaceae, Elaeocarpaceae, Flagellariaceae, Gnetaceae, Goodeniaceae, Haloragaceae, Hanguanaceae, Hippocastanaceae, Icacinaceae, Illliciaceae, Irvingiaceae, Juncaceae, Lowiaceae, Magnoliaceae, Nyssaceae, Ochnaceae, Oxalidaceae, Pinaceae, Podocarpaceae, Portulacaceae, Rafflesiaceae, Restionaceae, Rhizophoraceae, Rosaceae, Saurauiaceae, Schisandraceae, Simaroubaceae, Smilacaceae, Sphenocleaceae, Stylidiaceae, Symplocaceae, Theaceae, Triuridaceae. *Volume 3(1) (1979) – Psilotaceae, Lycopodiaceae, Selaginellaceae, Isoetaceae, Equiset ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Peninsular Malaysia
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goniothalamus
''Goniothalamus'' is one of the largest palaeotropical genera of plant in family Annonaceae. Iban people beliefs It is believed by the Iban people that when burnt it repels mosquitoes because of its strong scent and thick smoke it creates. It is also believed to repel evil spirits, it is mostly burned during the night and on days where it is both hot and rainy. Species list It contains the following species (divided according to Floristic Region): Fijian Region ( Fiji and New Hebrides) * ''Goniothalamus monospermus'' (A.Gray) R.M.K.Saunders Indian Region (India and Sri Lanka) * ''Goniothalamus gardneri'' Hook.f. & Thomson * ''Goniothalamus hookeri'' Thwaites * ''Goniothalamus rhynchantherus'' Dunn * ''Goniothalamus salicina'' Hook.f. & Thomson * ''Goniothalamus simonsii'' Hook.f. & Thomson * ''Goniothalamus thwaitesii'' Hook.f. & Thomson * ''Goniothalamus wynaadensis'' Bedd. * ''Goniothalamus meeboldii'' Craib Indochinese Region (South China extending into North Vietnam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radical (chemistry)
In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron. With some exceptions, these unpaired electrons make radicals highly chemically reactive. Many radicals spontaneously dimerize. Most organic radicals have short lifetimes. A notable example of a radical is the hydroxyl radical (HO·), a molecule that has one unpaired electron on the oxygen atom. Two other examples are triplet oxygen and triplet carbene (꞉) which have two unpaired electrons. Radicals may be generated in a number of ways, but typical methods involve redox reactions. Ionizing radiation, heat, electrical discharges, and electrolysis are known to produce radicals. Radicals are intermediates in many chemical reactions, more so than is apparent from the balanced equations. Radicals are important in combustion, atmospheric chemistry, polymerization, plasma chemistry, biochemistry, and many other chemical processes. A majority of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stigma (botany)
The stigma () is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of , the cells of which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings. The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals ( biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and sle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovule
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a ''megagametophyte''— is also called the ''embryo sac'' in angiosperms. The megagametophyte produces an egg cell for the purpose of fertilization. The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule. Location within the plant In flowering plants, the ovule is located inside the portion of the flower called the gynoecium. The ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a ''funiculus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovary (botany)
In the flowering plants, an ovary is a part of the female reproductive organ of the flower or gynoecium. Specifically, it is the part of the pistil which holds the ovule(s) and is located above or below or at the point of connection with the base of the petals and sepals. The pistil may be made up of one carpel or of several fused carpels (e.g. dicarpel or tricarpel), and therefore the ovary can contain part of one carpel or parts of several fused carpels. Above the ovary is the style and the stigma, which is where the pollen lands and germinates to grow down through the style to the ovary, and, for each individual pollen grain, to fertilize one individual ovule. Some wind pollinated flowers have much reduced and modified ovaries. Fruits A fruit is the mature, ripened ovary of a flower following double fertilization in an angiosperm. Because gymnosperms do not have an ovary but reproduce through double fertilization of unprotected ovules, they produce naked seeds that do not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture. Typically, they also look different from the parts of the flower, such as the petals or sepals. A plant having bracts is referred to as bracteate or bracteolate, while one that lacks them is referred to as ebracteate and ebracteolate, without bracts. Variants Some bracts are brightly-coloured and serve the function of attracting pollinators, either together with the perianth or instead of it. Examples of this type of bract include those of ''Euphorbia pulcherrima'' (poinsettia) and ''Bougainvillea'': both of these have large colourful bracts surrounding much smaller, less colourful flowers. In grasses, each floret (flower) is enclosed in a pair of papery bracts, called the lemma (lower bract) and p ... [...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] |
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