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Column (botany) - Wikipedia, the free encyclopedia The column, or technically the gynostemium, is a reproductive structure in the center of an orchid flower (also in the birthwort family Aristolochiaceae, such as in Thottea hainanensis). The column foot is formed by the attachment of the lip to the basal protruding part of the column. Unlike almost all other flowering plants, the single male anther at the tip of the column produces pollen that is not free and powdery but held in waxy masses of two, four or six pellets called pollinia. en.wikipedia.org /wiki/Column_(botany)   (309 words)

Column (botany) The column or technically, the gynostemium is a reproductive structure in the center of an orchid flower. It is derived from the fusion of both male and female parts into a single organ that both releases the pollen and also receives it (ideally from another individual) for fertilization. Unlike almost all other plants (see Asclepiadaceae[?]) the single male anther at the tip of the column produces pollen that is not free and powdery but held in waxy masses of two, four or six pellets called pollinia[?]. www.ebroadcast.com.au /lookup/encyclopedia/co/Column_(botany).html   (118 words)

Botany: Definition and Links by Encyclopedian.com ...Botany Botany Botany is the study of plants. The kingdom Plantae is divided..., stratification (botany) and germination. ...Column (botany) Column (botany) The column or technically, the gynostemium is a... www.encyclopedian.com /bo/Botany.html   (263 words)

botany/orchidaceae The males are tricked and attempt to mate with or steal away the "female insect" and thus flies away with pollinia and/or has deposited pollinia onto the stigma from another flower. The trapped insect must squeeze through a slim tunnel between the column and tip of the labellum to escape, consequently attaching pollinia to its body. The lip of most species is united to the column, forming a tube of nectar that penetrates the pedicel. www.botany.com /orchidaceae.html   (3366 words)

Axial skeleton It consists of the skull, the vertebral column, the ribs and the sternum or breastbone. The vertebral column consists of separate bones, the vertebrae. The vertebral column of 33 vertebrae is divided into five regions according to their position and structure. www.botany.uwc.ac.za /sci_ed/grade10/manphys/axial.htm   (1570 words)

Flowering Plant Families, UH Botany The column is colored similar to the petals and has a flap on each side where each of the two stamens are attached. The column is green and white, extending from the center of the flower. One stamen is adnate to the lower surface of each of the greenish lobes of the column. www.biologie.uni-hamburg.de /b-online/vascular/orchid.htm   (582 words)

Column (disambiguation) - Wikipedia, the free encyclopedia Column (botany), a part of an orchid also known as the gynostemium Column (database), a set of data values of a particular type in a relational database Vertebral column, a column of vertebrae situated in the dorsal aspect of the abdomen en.wikipedia.org /wiki/Column_(disambiguation)   (187 words)

Flowering Plant Families, UH Botany This close view shows part of the staminal column and the emergent style branches of this endemic Hawaiian hibiscus. Each of the individual stamens diverging from the column are terminated by a 1-celled or "half" anther. The staminal column and the petals are adnate at the base of the flower. www.botany.hawaii.edu /faculty/carr/malv.htm   (512 words)

Botany, Roses, Orchids, Wildflowers, Botanical Rare & Out of Print Books EATON, Amos; A Manual of Botany for the Northern and Middle States of America; containing Generic and Specific Descriptions of the Indigenous Plants and Common Cultivated Exotics Growing North of Virginia, to which is prefixed a Grammar and Vocabulary. An important study of botany of this part of Australia which includes biographies of previous botanists and artists, a detailed description of each area, excellent color photos of plants and ecologies with good historical illustrations comparing the changes. The results of this exploration and scientific expedition, sponsored by the government of Canada and under the command of Vilhjalmur Steffansson, was published in 14 volumes in 77 numbers, over 25 year period, covering various aspects of natural history, geology, tides, native peoples, etc, each part produced by an expert in their field. www.horizonbook.com /botany.html   (14511 words)

Botany Bay and tributaries - NSW DPI - Fisheries   (Site not responding. Last check: 2007-11-06) I do now, by this notification, prohibit the taking of fish (including shellfish) by the methods of fishing specified in Column 1 of Schedules 1 to 9 of this notification, from the waters shown in Column 2 of those schedules. The tidal waters of Botany Bay generally north of a line drawn from the south-western extremity of the public baths at Kyeemagh, to the 'Civil Aviation Authority Terminal Approach Radar Building' located north of Taxiway B10 at Sydney Airport. All waters of Botany Bay enclosed by a line drawn from a point marked F­D on the eastern side of the western or main runway to a point marked F­D on the western side of the third or parallel runway to Sydney Airport. www.fisheries.nsw.gov.au /general/homepage/locations/botany_bay_and_tributaries   (656 words)

Lab Manual Exercise #4 To calculate the observed ratio (Column 3), divide the number of each grain phenotype by 21 (the grain phenotype with the lowest number of grains). In the last column (Column 6), for each grain phenotype take the observed number of grains (Column 2) and subtract the expected number (Column 5), square this difference, and then divide by the expected number (Column 5). To calculate the observed ratio (Column 3), divide the number of each grain phenotype by 26 (the grain phenotype with the lowest number of grains). waynesword.palomar.edu /lmexer4.htm   (1791 words)

Garden and Forest: The Botanical Basis of It All - Garden and Forest American botany was no longer the exclusive domain of Europeans; American scientists, under Gray's leadership, had established their own scientific traditions. Sargent realized that it was a knowledge of botany that was to inform the development of all the other disciplines he intended the journal to foster: horticulture, landscape art and forestry. Over the succeeding ten years this column would document the development of the Arboretum, focusing particularly on the many new plants discovered by the Arboretum's agents, many of which were introduced into cultivation by the Arboretum. www.loc.gov /preserv/prd/gardfor/essays/spongberg.html   (1126 words)

ChemAlliance Case Study: Stripping Column and Other Changes Reduce Water Use and Recover Chemicals at Olefin Plant   (Site not responding. Last check: 2007-11-06) The ICI Olefins plant at Botany, New South Wales, produces hydrocarbons that are primarily used in the manufacture of plastics. In addition to these measures, an effluent stripping column was commissioned in February 1995 as a key part of its effluent improvement strategy. Based on 1994 costs, the cost of waste (including value of water, value of chemicals in wastewater and the cost of disposal) fell from $2.77 million per annum in 1985 to $325,000 per annum in 1995, a reduction of $2.4 million per annum. www.chemalliance.org /Handbook/plant/case_study.asp?CSID=347   (216 words)

A Tudor protein with multiple SNc domains from pea seedlings: cellular localization, partial characterization, sequence ... Purification of HMP by heparin affinity column chromatography The column was eluted with a gradient of 0.15–1.0 M KOAc in CSB, monitored at 260 nm (dotted line) and 280 nm (solid line), and 300 µl fractions collected. to a heparin affinity column equilibrated with 150 mM KOAc in jxb.oxfordjournals.org /cgi/content/full/54/384/971   (6053 words)

UH Manoa Library - Science & Technology Reference - Pacific Botany Resources The articles generally include information on the botany and history of the crop as well as uses, cultivation and processing. Donald Gardner of the UH Manoa Botany Departament provides links to a number of his articles and reports on diseases of some of Hawaii's native plants including koa, 'a'ali'i, mamane, 'ohelo, and several more. By Dr. Gerald Carr of the UH Manoa Botany Department, this is an extensive collection of color images of hundreds of native plant species; arranged by botanical name. www.hawaii.edu /sciref/pacbotany.html   (1296 words)

Flowering Plant Families, UH Botany The second photo shows an oblique view of the column with one of the two lateral stamens in view. One stamen is visible on each side of the column. Parts of both stamens are visible in the lateral view of the column in the second photo. www.botany.hawaii.edu /faculty/carr/cypripedioid.htm   (259 words)

A trans-zeatin riboside in root xylem sap negatively regulates adventitious root formation on cucumber hypocotyls -- ... The butanol phase partitioned from the 20% acetonitrile eluate (by open column chromatography on silica gel ODS-Q3) was applied to the ODS-80Ts column of the HPLC system and eluted with a linear gradient of acetonitrile (from 0–30% in 60 min); absorbance at 280 nm was monitored (A). The inhibitory fraction No. 4 (35–39 min) from an ODS-80Ts column was applied to a Spherisorb W silica column and eluted with 80% (v/v) acetonitrile with monitoring absorbance of 280 nm (A). The inhibitory fraction No. 7 (10–11 min) from a Spherisorb W silica column was applied to an ODS-80Ts column and eluted with 0.1% (v/v) acetic acid solution mixed with 10% acetonitrile (v/v) with a monitoring absorbance of 280 nm (A). jxb.oxfordjournals.org /cgi/content/full/53/378/2193   (4192 words)

Flowering Plant Families, UH Botany The gynoecium consists of a single compound pistil of 2 carpels, a single 2-cleft style, and an inferior ovary with one locule and one basal ovule. During maturation of a flower, the style grows through the anther column, and as it does, hairs on the outer surface of the closed style lobes brush the pollen that is released into the anther column to the distal opening where it is available for biotic pollinators. A nectary in the form of a scale or small cup is commonly found alongside or around the base of the style. www.botany.utoronto.ca /courses/BOT307/Carr-vascular/aster.htm   (696 words)

[No title]   (Site not responding. Last check: 2007-11-06) ] Parallel, prismatic columns that are formed as a result of contraction during cooling in basaltic flow and other extrusive and intrusive rocks. ] The electrical resistance of a column of air 1 centimeter square, extending from the earth's surface to some specified altitude. ] The number of linearly independent columns of a matrix; the dimension of the image of the corresponding linear transformation. www.accessscience.com /Dictionary/C/C37/DictC37.html   (1609 words)

Plant Press Vol. 3, No. 1/Department of Botany, National Museum of Natural History, Smithsonian Institution Over the last few centuries, Madagascar's oddly shaped plants with bulging trunks and other adaptations, as well as their more conventional and colorful cohorts, were eventually discovered and collected for scientific study, as well as for germplasm to enhance the field of horticulture, often under very physically (and financially) taxing conditions. Convincing evidence from molecular botany and the expression of clades within the expanded Malvaceae are also being taken into consideration. Concurrent with his efforts to advance our understanding of the Malvales, he is preparing a treatment of the flora of a very interesting 21 square kilometer area of the northern Andes Mountains, namely the Guaramacal National Park, Venezuela, on the slopes of the Sierra Nevada proper which face the llanos. www.nmnh.si.edu /botany/plantpress/vol3no2.htm   (5983 words)

Botanists Botany Biology Science He was nominated for the prestigious award by an international panel of botanists and plant... Sorensson, an artist and prodigy of botanists, said she wanted to remain respectful toward the Solheim?s love of botany by integrating Indian marble with... - Professor Guranda E. Gvaladze is Head of the Department of Plant Embryology of the Institute of Botany of the Georgian Academy of Sciences, one of founders of the Georgian scientific school of Plant Embryology. www.iaswww.com /ODP/Science/Biology/Botany/Botanists   (711 words)

GreenBiz | News Center | Columns   (Site not responding. Last check: 2007-11-06) Written by a couple of top-flight scientists, Gretchen Daily, a conservation biologist from Stanford, and Brian Walker, an ecologist from CSIRO Wildlife in Australia, the article lays out a compelling case for increased scientific activism. In this column, I want to explore some of the reasons why this isn t happening now, and some suggestions for moving it along. Within the disciplines of ecology, biology, botany, and zoology, even within fields as diverse as agricultural sciences and economics, are vast tanks of knowledge about the actual state of affairs. www.greenbiz.com /news/columns_third.cfm?NewsID=11363&pic=3   (559 words)

column. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. Something resembling an architectural pillar in form or function: a column of mercury in a thermometer. A formation, as of troops or vehicles, in which all elements follow one behind the other. Botany A columnlike structure, especially one formed by the union of a stamen and the style in an orchid flower, or one formed by the united staminal filaments in flowers such as those of the hibiscus or mallow. www.bartleby.com /61/61/C0496100.html   (212 words)

California Wildflowers - White-flowered Bog Orchid   (Site not responding. Last check: 2007-11-06) In this species it curves forward and also has a dilated cylindrical extension at its base called a spur. The two upper petals fuse with the uppermost sepal to form a hood which arches over the column. The column or central part of the flower is formed by the fusion of stamens, style, and stigma. www.calacademy.org /research/botany/wildflow/wildflowers.asp?w_id=60   (152 words)

Penrhyn Estuary (Botany Bay) - NSW DPI - Fisheries   (Site not responding. Last check: 2007-11-06) I, Richard Sheldrake, prohibit the taking of fish as specified in Column 1 of the Schedules of this notification, from waters shown in Column 2 of the Schedules. This prohibition is effective for a period of five years from the date of publication, unless sooner varied or revoked by notification of Deputy Director-General, Agriculture and Fisheries. The whole of the waters of Penrhyn Estuary in Botany Bay being generally east of a line drawn from the eastern side of the Boat Ramp off Penrhyn Road to the beach along Foreshore Drive, passing through the yellow and fl NSW Maritime Authority's South Cardinal Marker. www.fisheries.nsw.gov.au /general/homepage/locations/penrhyn_estuary_(botany_bay)   (236 words)

column - OneLook Dictionary Search noun: a vertical glass tube used in column chromatography; a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored bands Phrases that include column: spinal column, vertebral column, lally column, water column, engaged column, more... Words similar to column: columned, editorial, pillar, tower, chromatography column, newspaper column, more... www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=column   (467 words)

diatom buoyancy When sunlight hits the surface of the water, the intensity is at a maximum. The light is absorbed as it percolates down into the water column. Thus, the farther below the surface of the water an alga lives, the less intense light it sees. www.mbari.org /staff/conn/botany/diatoms/john/special/critdep.htm   (105 words)

Botany - Biology (Science and Technology) WebShed.Com Center of Web BSA exists to promote research and teaching in all fields of plant biology and to facilitate cooperation among plant biologists worldwide. This private not-for-profit organization is dedicated to the study of plants and associated organisms for the betterment of society. Scott's collection of links to botany resources on the Internet emphasizes education, courses and projects. www.centerofweb.com /scitech/bio_botany.htm   (886 words)

botany/passiflora Rings of thread-like filaments are found atop the tepals. The five stamens grow on a long central column and are topped by the ovary and its three, nail-like stigmas. From the interesting arrangement of the different parts of the blooms, this plant has been given the name of Passion Flower. www.botany.com /passiflora.html   (1208 words)

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