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Topic: Sessile


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In the News (Fri 17 Feb 12)

  
 [No title]
Sessile spikelets 2.5-4.5 mm, ovate, somewhat glaucous, apices blunt; lower glumes glabrous or hirtellous, rarely with a dorsal pit; awns 8-16 mm; anthers 0.6-1.4 mm.
Sessile spikelets 5.5-8.5 mm, lanceolate; lower glumes densely short-pilose on the lower 1/2, sometimes with a dorsal pit; awns 18-26 mm; anthers 1-1.5 mm.
Sessile spikelets 5-8 mm, lanceolate; lower glumes 5.5-7 mm, glabrous, shiny, with a deep dorsal pit, tapering to a narrow, slightly bifid apex; awns 20-28 mm; anthers 0.5-1 mm.
herbarium.usu.edu /treatments/Bothriochloa.htm   (2865 words)

  
 UNODC - Bulletin on Narcotics - 1972 Issue 4 - 004
The main object of this paper is to describe a new type of sessile gland in cannabis and to report gas chromatographic results on the presence of cannabinoids in the glands, but the opportunity is taken to include descriptions, with scanning electron micrographs, of all the trichomes.
To remove the resin from the sessile glands of the leaves, the latter were gently pressed against lens paper.
In contrast the stalked glands are mainly present on the outer (lower) surface of the bracteoles, and the upper (inner) surface of the small bracts subtending the bracteoles.
www.unodc.org /unodc/en/bulletin/bulletin_1972-01-01_4_page005.html   (1654 words)

  
 Sessile oak - Wikipedia, the free encyclopedia
The Sessile oak Quercus petraea, also known as Durmast oak, is an oak native to most of Europe, and into Anatolia.
It is a large deciduous tree up to 40 m tall, in the white oak section of the genus (Quercus sect.
Significant botanical differences with the English oak include the stalked leaves, and the stalkless (sessile) acorns.
en.wikipedia.org /wiki/Sessile_oak   (134 words)

  
 Locomotion.htm
Sessile organisms cement themselves onto substrates such as rocks, or other organisms, as is the case with bryozoans and sponges that can grow over the shells of barnacles and oysters.
The choices that sessile organisms make at the time of settlement are extremely important, because they will only ever interact--in terms of feeding, reproduction, and protection--with their immediate environment, and with water that flows past that particular location.
Many sessile adults have planktonic larvae, such as barnacle nauplii, which swim using setose appendages and choose, with sensory input, the substratum to which the adult is permanently attached.
depts.washington.edu /fhl/zoo432/argyle/Locomotion.htm   (955 words)

  
 Sessile Oak   (Site not responding. Last check: 2007-10-22)
Sessile Oak has longer leaf stalks and lacks the small lobes at the back of each leaf which point backwards on the Pedunculate Oak.
Sessile Oak tends to grow on poorer acid soils in the western and northern parts of Britain.
Indeed, it is rare to find a Sessile Oak covered in caterpillars as is often the case with Pedunculate Oak.
www.countrysideinfo.co.uk /tree_gallery/sessile_oak/sessile_oak.html   (115 words)

  
 Sessile Epibenthic Assemblages   (Site not responding. Last check: 2007-10-22)
In addition the establishment and development of sessile epibenthic assemblages on artificial panels at the same localities as the studied natural communities will be monitored, to identify such pattern as might characterize their development and to establish whether or not a stable climax state would or could be attained on the panels.
The development of sessile epibenthic assemblages is dependent on the type of initial larval settlement which, in turn, depends on many factors such as the reproductive cycles of the organisms and the length of free swimming larval periods.
The composition of sessile epibenthic assemblages is greatly influenced by the two factors of competition and predation.
staffweb.itsligo.ie /staff/bcrowe/bill/styles/frames/marbiol/sesepiba.htm   (6032 words)

  
 The Role of Allelopathic Chemicals in the Spatial Patterning of Benthic Communities
Sessile, marine organisms and terrestrial plants have the similar pressures of competing for light, space, and essential macro and micronutrients leading to similar strategies for space acquisition and maintenance.
It is among sessile organisms that these battles are fought in the struggle for survival in highly competitive systems such as tropical ecosystems, and marine coral reefs.
Sessile organisms and plants may have similar pressures which determine the evolution of toxic compounds causing inhibition of growth of sessile competitors (Becerro, 1995).
www.colostate.edu /Depts/Entomology/courses/en570/papers_1998/lindberg.htm   (4028 words)

  
 [No title]
Pedicels free or fused to the rachis internodes.
The sessile spikelets usually contain a bisexual or pistillate floret, and often exhibit features such as awns and calluses that are related to seed dispersal and establishment (Peart 1984); the pedicellate spikelets are usually staminate, sterile, vestigial, or even absent.
Sessile spikelets terete or laterally compressed, calluses usually sharp, sometimes blunt.....
herbarium.usu.edu /treatments/Andropogoneae.htm   (2609 words)

  
 Fresh Water Rotifers: Sessile: Page 1. A discussion with photomicrographs of sessile rotifers.   (Site not responding. Last check: 2007-10-22)
This page shows a variety of sessile rotifers, and page 2 is a detailed look at the rotifer Floscularia and its "brick-making" activities.
Some tubes are merely the accumulation of mucous secretion which is compacted around the foot by their feeding current, and others are smooth regular tubes built by the rotifer from carefully deposited individual pellets of compacted debris.
The sessile rotifer Floscularia builds itself a gently tapering conical case from round pellets of compacted debris which are produced in a special organ on the creature's dorsal side.
www.micrographia.com /specbiol/rotife/sessil/sess0100.htm   (386 words)

  
 Society of Protozoologists: Portal to Protistology
Sessile protists are principally unicellular organisms that are attached to substrate by special adhesive organelles (such as stalks, etc).
Two main morphotypes of sessile protists are distinguished (Dovgal, 2000): stalked and flattened on substrate.
Sessile suctorian ciliates Discophrya elongata on leg of water bug Ranatra linearis (according to Dovgal, 2001).
www.uga.edu /~protozoa/portal/sessile_protists.html   (404 words)

  
 Oaks
Pedunculate Oak and the closely related Sessile Oak, are the most important native trees for sustaining wildlife, especially insects, in Britain.
Sessile Oak is a deciduous tree with a narrower crown and more upright branching than Pedunculate Oak.
Sessile Oak was much used to make charcoal for smelting iron in N and NW Britain.
www-saps.plantsci.cam.ac.uk /trees/quercus.htm   (605 words)

  
 Sessile   (Site not responding. Last check: 2007-10-22)
The red lump on this dog's pinna is not a jellybean or even an engorged tick - it's a histiocytoma with a sessile attachment.
Compare this image to pedunculated, in which the mass is attached by a stem or peduncle.
So the point here is that it is important not only to describe the tumor itself (in this case: red, ovoid, smooth) but also to describe its attachment to the tissue (in this case: sessile).
cal.vet.upenn.edu /pathterm/margins/sessile.htm   (103 words)

  
 [No title]   (Site not responding. Last check: 2007-10-22)
Leaves sessile to nearly clasping, oblong to oblong-elliptic or ovate-oblong, sometimes oblanceolate, 2 to 7 cm long, 4 to 20 mm broad, reduced upwards, apically rounded to obtuse, acute, or retuse, underside conspicuously fl punctate.
Leaves sessile, usually clasping, generally ovate-triangular to deltoid-cordate, pointed, apically acute to obtuse, 5- to 7-nerved, finely punctate, usually on both surfaces, larger midstem leaves to ca.
Leaves oblong to oblong-oblanceolate or -elliptic (or ovate), to 15 cm long and 3.5(5) cm broad, usually smaller, at least the lower and sometimes all the leaves with short petioles to 15 mm long, basally cuneate, apically rounded, lower surface paler and somewhat glaucous, with pale punctations that darken on drying.
www.csdl.tamu.edu /~sangita/DILLENI.htm   (10434 words)

  
 Queensland Museum - Sessile Marine Invertebrates
Biodiversity of sessile marine invertebrates and bioprospecting for natural therapeutic compounds as sources of potential pharmaceuticals (funded by AstraZenica R & D Griffith University (AzGu)).
Sponges in particular, and sessile marine invertebrates in general, are proving to be extremely valuable and potentially economically important sources of compounds useful to the pharmaceutical industry, and it is this industry funding our research.
Adult sponges are sedentary (sessile), attached to the seabed or other substrate for most of their lives, although many have larvae that motile, swimming or crawling away from their parent.
www.qmuseum.qld.gov.au /organisation/sections/SessileMarineInvertebrates   (2308 words)

  
 Fossils and the Flood
The fossils of calcified sessile benthic marine organisms are abundant in the Phanerozoic geologic record.
Particular fossils and fossil assemblages of sessile benthic organisms may be interpreted either as in-place, buried where they grew, or transported from their place of growth and buried elsewhere.
A logical retrodiction of this hypothesis is that all of the sessile benthic marine fossils within so-called "flood deposits" were transported from their preflood growth location prior to burial, and are therefore allochthonous.
www.geocities.com /earthhistory/ff.htm   (5812 words)

  
 Veldkamp: "A revision of Chrysopogon Trin. including Vetiveria Bory...." Austrobaileya 5 (1999) 503-533   (Site not responding. Last check: 2007-10-22)
Sessile spikelets callus oblique, obtuse to pungent, callus setose.
Sessile spikelets lower glume apex obtuse, or mucronate, or bi-dentate and mucronate.
The anthers of the sessile spikelet are distinctly smaller than those of the pedicelled ones and occasionally appear to be staminodial, rendering the floret functionally female.
members.aol.com /vetivernet/vip/cziztax.htm   (11649 words)

  
 Biochemical basis for floral color in sessile-flowered Trillium   (Site not responding. Last check: 2007-10-22)
Assignment of individuals to either the red or yellow classes was not difficult; however, assignment to the pink class was based upon petal color together with colorations in other parts of the plant.
Occurrence and relative concentrations of flavinoids in petals of Trillium sessile (from Les et al., 1989).
sessile, much has been made in the literature of the value of the chemical composition in taxonomic studies.
www.goldsword.com /sfarmer/Trillium/anthocyanins.html   (1557 words)

  
 Search Results for sessile - Encyclopædia Britannica
Free-swimming tunicates are found throughout the oceans as plankton, while sessile forms grow mainly on solid surfaces...
Despite their sessile life-styles, some adult ascidians can move by attaching with one area of the body and letting go with another.
An ancestral chordate, as suggested by the adult lancelet and the tadpole larva of tunicates, had a distinct front and hind end, an anterior mouth, a posterior tail above an anus, unpaired fins, and...
www.britannica.com /search?query=sessile&submit=Find&source=MWTEXT   (329 words)

  
 Sessile Organisms Vols.16-20 (Abstract)
Based on the relationship between the sessile animal attachment and the surface free energies of the substrates, the percent of sessile animal attachment was significantly reduced for the substrates with lower surface free energies.
The single-plated wall in these sessile cirripeds, nestled cryptically between and tending to mimic the hydnons of the host, assumes an unrivaled spectrum of outlines and ovarall shapes that seemingly defy description.
In the case of sessile animals, fouling of ship hull accounts for introductions of foreign species arriving in Japanese waters; ballast water may be more important for dispersal within Japan.
wwwsoc.nii.ac.jp /sosj/activity/abst16-20.html   (5001 words)

  
 Sabbatical Leave Interterm and Spring Terms 2002
This species is distinguished by its sessile flowers and mottled leaves.
sessile are similar in morphology to the reports of Bergstrom and Murell (1973); Bailey (1951, 1958); and Darlington and LaCour 1940.
The distribution of Trillium sessile in Virginia is primarily western, but it can move east.
www.bridgewater.edu /~lhill/Trilliumproject.htm   (4584 words)

  
 New Method for Measuring Contact Angles of a Sessile Drop
The spreading of an evaporating liquid on a solid surface occurs in many practical processes and is of importance in a number of practical situations such as painting, textile dyeing, coating, gluing, and thermal engineering.
The dynamic contact angle of a spreading nonvolatile liquid drop provides a simple tool in the study of the free-boundary problem, but the study of the spreading of a volatile liquid drop is of more practical interest because the evaporation of common liquids is inevitable in practical processes.
The most common method to measure the contact angle, the contact radius, and the height of a sessile drop on a solid surface is to view the drop from its edge through an optical microscope.
www.lerc.nasa.gov /WWW/RT2001/6000/6712chao   (532 words)

  
 Gymnocarpium dryopteris in Flora of North America @ efloras.org
Pinnae of 2d pair usually sessile with basal basiscopic pinnule longer than or equaling adjacent pinnule and about equal to basal acroscopic pinnule; basal acroscopic pinnule equaling or slightly shorter than adjacent pinnule, often with entire, rounded apex.
Pinnae of 3d pair sessile with basal basiscopic pinnule equaling adjacent pinnule and equaling basal acroscopic pinnules; basal acroscopic pinnule equaling or slightly shorter than adjacent pinnule.
They are large, 3-pinnate-pinnatifid, and the second and third pairs of pinnae are sessile with basal basiscopic pinnules markedly longer than the basal acroscopic pinnules.
www.efloras.org /florataxon.aspx?flora_id=1&taxon_id=200003903   (353 words)

  
 PID- Reclinomonas Appearance   (Site not responding. Last check: 2007-10-22)
Reclinomonas cells appear as sessile, loricate trophic cells, naked free-swimming zoospores, and cysts.
Zoospores are similar to the sessile cells but are naked, tend to be sausage-shaped rather than comma-shaped, lack an epipodium and possess a large posterior vacuole that contains the lorica scales.
They have a clear, thick wall, with a button (escape aperture?) at the top of the cyst (ventral surface of the former trophic cell).
megasun.bch.umontreal.ca /protists/reclino/appearance.html   (188 words)

  
 Nearctica - Eastern Wildflowers - Fabaceae - Sessile Tick-Trefoil (Desmodium sessilifolium)
Leaves divided into 3 leaflets and petiole extremely short, hearly sessile with the stem.
Habitat: Sessile Tick-Trefoil is found on a variety of dry soils.
The leaflets of Stiff Tick-Trefoil are even narrower, have a distinct petiole, and are not sessile to the stem.
www.nearctica.com /flowers/legume/desmod/Dsessil.htm   (129 words)

  
 Williams--Sessile habit and chordate evolution
Abstract Contemporary sessile animal groups evidently have evolved gradually from sluggish benthic ancestors, resembling holothuroids such as Sphaerothuria and the Psolidae in habit.
The U-bend of the digestive tubes of echinoderm larvae might represent a dorsal flexure reminiscent of a sessile ancestry; the gut curvature of the entoproct larva also is presumed to be dorsal.
The dorsal position of the chordate nerve cord may be an inheritance from a near-sessile ancestor with dorsal particle-feeding arms, and its tubular structure evidently reflects the protective inrolling of a primitive intra-epidermal nerve concentration.
www.rsnz.org /publish/nzjz/1996/111.php   (211 words)

  
 Title page for ETD etd-06282003-114935
Foraging activity was examined in the field from April to September 2001 by attracting T. sessile to feeding stations containing a 20% sucrose solution.
Under laboratory conditions, T. sessile was attracted to feeding stations and foraged throughout the day and night at a constant temperature of approximately 25 C. Evaluations of seasonal food preferences using carbohydrate, protein and lipid samples were also conducted throughout the spring and summer.
Lipids were generally ignored by T. sessile and in most cases decreased consumption of the sample.
scholar.lib.vt.edu /theses/available/etd-06282003-114935   (330 words)

  
 29¢ Sessile Bellwort   (Site not responding. Last check: 2007-10-22)
Less widespread than other Uvularia species, sessile bellwort occurs on sandy or acid soils of moist woods and thickets.
The leaves of sessile bellwort are attached directly to the stem, and unlike other bellworts, do not surround the stem.
Sessile bellwort also is smaller, with paler, more closed flowers.
www.unicover.com /EA1CAKQB.HTM   (365 words)

  
 Sessile oak - Quercus petraea - ARKive   (Site not responding. Last check: 2007-10-22)
The crown of this magnificent native tree is domed, with branches that radiate outwards and are straighter than those of Britain’s other native oak, pedunculate or English oak (Quercus robur).
Another distinction between these two oaks is that the crown of sessile oak appears more open when in leaf, as the leaves are evenly spread rather than in clusters as they are in pedunculate oak.
The sessile oak is so called because the acorns are not supported on stalks (‘peduncles’) as they are in the pedunculate oak.
www.arkive.org /species/ARK/plants_and_algae/Quercus_petraea   (166 words)

  
 WetCanvas! - Sessile Time xp   (Site not responding. Last check: 2007-10-22)
My take on Sessile is that they have their agendas and requirements which predispose them to settling at these locales.
Sessile are founts of potential, and people will try to use them and understand them because that is our nature.
Sessile mostly exist in that greater part of the universe to which we are blind except by inference.
www.wetcanvas.com /forums/archive/index.php/t-241937.html   (3217 words)

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