How To Use Carpel In A Sentence
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First, we have in the bottom from which the mere structure of an ovary is deduced, the normal dicarpellary structure, and there is in addition a tendency in excess toward a parietal placentation.
Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries
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Most hermaphroditic mutants were phenotypically similar with a mature gynoecium composed of five carpels and 10 stamens.
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Once the pollen has fertilized the egg cell contained within the ovule, the ovule develops into a seed, and the ovary of the enclosing carpel begins to enlarge and ripen, forming the fruit.
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If, on the other hand, the carpels be few in number, and placed in a verticillate manner, the axis then generally passes upwards without any change in the form or position of the carpels being apparent, as in a proliferous columbine, figured in the 'Linnean Transactions,' vol. xxiii, tab. 34, fig. 5.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Position and external circumstances may have some indirect effect, and it may, perhaps, be significant that in all the instances of polliniferous ovules, the ovular structures have been exposed on an open carpel or otherwise, in place of being confined within the cavity of a closed ovary, as under ordinary circumstances.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Pollen tubes then exit the site of intercellular growth at the base of the funiculus where they continue to grow within the ovary locule along the adaxial carpel surface to finally enter the ovule micropyle.
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Advance has been along two lines, markedly in relation to insect-pollination, one of which has culminated in the hypogynous epipetalous bicarpellate forms with dorsiventral often large and loosely arranged flowers such as occur in Scrophulariaceae, and the other in the epigynous bicarpellate small-flowered families of which the Compositae represent the most elaborate type.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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Thanks for telling me, Terri, since "carpel" means "One of the structural units of a pistil, representing a modified ovule-bearing leaf.
The Naked Truth about Literature and Life
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In this second class of cases the corolla is papilionaceous, the filaments free, the carpellary leaf on a long stalk provided with stipules, its blade more or less like the usual carpel, with its margins disunited or more commonly united with the ovules in the interior, sometimes represented by a foliaceous, dentate primine only.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Previous studies based on a qualitative analysis have shown a high degree of variability in the mode of expression of carpel/stamen in homeotic bisexual flowers.
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-- _Sinapis_, replum and ovules; the dotted line shows the position of the carpels.]
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The last bract on the spikelet axis has been removed from around the terminal flower, which has an aborted carpel with a two-branched stigma and the filaments of the two stamens, the anthers having abscised.
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The officinal part of the plant is the fruit, which consists of two united carpels, called a cremocarp.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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The cocoa flower has five free sepals, five free petals, five staminodes, five stamens and an ovary of five united carpels.
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Baillon, [265] wherein the pistil of _Trifolium repens_ consisted of three carpels, either separate, or combined so as to form a one-celled ovary with three parietal, pluri-ovulate placentæ; the ovary in these flowers was formed of the basal vaginiform part of the leaf; the three styles were formed by the petioles, while the stigmas were represented by trifoliolate leaves.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The number of initial ovules (number of ovules at anthesis) from the fruits was estimated by multiplying the number of carpels by two, because each carpel always has two ovules.
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No mature fruits had more than two seedless carpels.
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Inferred ancestral features include more than two whorls (or series) of tepals and stamens, stamens with protruding adaxial or lateral pollen sacs, several free, ascidiate carpels closed by secretion, extended stigma, extragynoecial compitum, and one or several ventral pendent ovule (s).
A Disclaimer for Behe?
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Ovules from self-pollinated carpels appear to degenerate early in development.
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In some few instances the calyx is not at all altered, but the carpellary leaf is trifoliolate, or even quinquefoliolate, the corolla being then absent.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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No mature fruits had more than two seedless carpels.
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Advance has been along two lines, markedly in relation to insect-pollination, one of which has culminated in the hypogynous epipetalous bicarpellate forms with dorsiventral often large and loosely arranged flowers such as occur in Scrophulariaceae, and the other in the epigynous bicarpellate small-flowered families of which the Compositae represent the most elaborate type.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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The berries in the most derived clade are all morphologically similar, with two carpels, axile placentation and mostly lenticular seeds.
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Five united stamens are adnate to the top of the pistil, which is made up of five connate carpels.
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RA2be its called carpel tunnel syndrome because of muscle inbalance in your forearm extensors and flexors use this product to rebalance them.
Army Rumour Service
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The officinal part of the plant is the fruit, which consists of two united carpels, called a cremocarp.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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I adelphia net webmail him of the myxomycota astrometry bounteousness and he acarpelous that it was one of the scholastically contorted cure of his neutralized tigris.
Rational Review
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Since all the carpels came from a single compartmented gynoecium (compound pistil), the gynoecium is referred to as syncarpous.
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From this it will be seen that six of the calycine ribs divide into three branches, one prolonged upwards as a lateral or median rib into the carpellary leaf, the other running horizontally to join with similar branches sent out from the neighbouring rib; the four intermediate calycine ribs divide into two branches only, which join the side branches of the first mentioned, but have no direct upward prolongation into the carpel.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Floral organ identity genes control the identity of the organs in the four floral whorls - the sepals, petals, stamens, and carpels - and act downstream of the meristem identity loci.
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The Colocynth seen in fruit much like an apple, not ribbed; it has the usual structure of the order, viz. 3-carpellary with revolute placentae, so much so, that they are placed near the circumference; seeds very numerous, surrounded with pulp, not arillate: no separation taking place; oval, brown, smooth.
Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries
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Some carpels and ovules were only slightly enlarged despite the flowers being cross-pollinated by hand.
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Unisexual flowers with three white petals produce numerous stamens or carpels and both present floral nectar.
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The stigma consists of a long band of receptive tissue along the ventral side of the carpel, covered by long unicellular papillae.
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The terminal female flowers consist of two or three carpels and no other organs.
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The disjunction or dialysis of the carpels, for instance, frequently renders axile placentation marginal.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Inferred ancestral features include more than two whorls (or series) of tepals and stamens, stamens with protruding adaxial or lateral pollen sacs, several free, ascidiate carpels closed by secretion, extended stigma, extragynoecial compitum, and one or several ventral pendent ovule (s).
A Disclaimer for Behe?
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In young flowers all the carpels are connate at the base, and each mature mericarp represents a single carpel rather than half a carpel as is the case in Lamiaceae and Boraginaceae.
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The AirMouse is composed of a lightweight durable fabric that seamlessly aligns itself with the ligaments of your hand and wrist and assists them into a neutral posture during use preventing you from developing computer-related repetitive stress injuries such as carpel tunnel syndrome normally associated with other computer mouse use.
MAKE Magazine
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These, as in Gymnosperms, are of two kinds, microspores or pollen-grains, borne in the stamens (or microsporophylls) and megaspores, in which the egg-cell is developed, contained in the ovule, which is borne enclosed in the carpel (or megasporophyll).
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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In some few instances the calyx is not at all altered, but the carpellary leaf is trifoliolate, or even quinquefoliolate, the corolla being then absent.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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We are unambiguously in the overshot chicago airport limousine but openly it can be univocal that our new polish is nutrition enthrallingly nightmarish and heterogenous and at the ratty foolscap we are vibraphonist pejoratively it wharf footer to be as acarpellous and precooked as landward.
Rational Review
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Here the petals were increased in number and variously modified, the stamens also; while in the centre and at the top of the flower, conjoined at the base with some imperfect stamens, was a carpel open along its ovuliferous margins.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The staminodes and the adjacent carpels in ABFs form a continuous ring and are inserted on a single whorl.
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Increased number of parts in the calycine, corolline, and carpellary whorls respectively.]
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Because valves are scored to determine the numbers of carpels present within a gynoecium, flowers with one or zero valves could affect the mean carpel number.
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= -- Numerical inequality in the case of the pistil, as compared with the other whorls of the flower, is of such common occurrence, under ordinary circumstances, that in some text-books it is looked on as the normal condition, and a flower which is isomerous in the outer whorls is by some writers not considered numerically irregular if the number of the carpels does not coincide with that of the other organs.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Mr. Brown says he has developed carpel tunnel syndrome in his hands from operating gasoline-powered weed trimmers.
Drop in Burials Hits Graveyard Shift
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The gynoecium has three carpels united to form a compound ovary with three styles that are short when the flowers open and that elongate gradually.
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Brongniart [275] records ovules of _Delphinium elatum_ existing in the form of marginal lobes of the carpellary leaf itself; so that each ovule corresponds to a lobe or large tooth of this leaf, the funiculus, as well as the raphe, being formed by the median nerve of the lateral lobe.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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On the whole, taking in consideration cases of partial frondescence, as well as those in which most of the parts of the flower are affected, phyllody would seem to be most common in the petals and carpels, least so in the case of the stamens and sepals.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Pollination in angiosperms and gymnosperms is the process that transfers pollen grains, which contain the male gametes (sperm) to where the female gamete (s) are contained within the carpel; [1] in gymnosperms the pollen is directly applied to the ovule itself.
Pollination
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As both from normal organogeny as well as from unusual conformation contradictory inferences may be drawn, it would obviously be unsafe to attempt the explanation of the so-called calyx-tube in general from any particular instances; so far as _Rosaceæ_ are concerned, there is so much variation in the relative position of calyx and carpels under ordinary circumstances, that it is no matter for surprise that similar diversities should exist in teratological cases.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The formation of organs in the four whorls of a typical eudicotyledonous flower, consisting of sepals, petals, stamens, and carpels, requires many genes for proper organ and tissue development.
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Mr. Brown says he has developed carpel tunnel syndrome in his hands from operating gasoline-powered weed trimmers.
Drop in Burials Hits Graveyard Shift
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CsACS2 like CmACS-7 is specifically expressed in buds determined to develop a carpel in carpel primordia and, like in melon, loss-of-function mutations, located near the active site of CsACS2 are associated with andromonoecy.
PLoS ONE Alerts: New Articles
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_Rhododendron_ I have observed a similar condition of the ovules, which, moreover, in the primary flowers, were attached to the walls of the carpels -- parietal placentation.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The flowers of the species are bisexual and protogynous, producing on average 13 unfused uniovulate carpels.
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In those plants which present this deviation from the ordinary condition with the greatest frequency, it often happens that the axis is normally more or less prolonged, either between the various whorls of the flower, as in the case of the gynophore, &c., or into the cavity of the carpels, as in the instances of free central placentation.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Instead of leaves, a floral meristem gives rise in sequence to sepals, petals, stamens, and carpels.
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Moquin [263] relates having found in the neighbourhood of Montpellier a flower of a tulip the ovary of which was represented by true leaves, which bore on their margins the ovules, and thus presented a striking analogy with the carpels of those Sterculias, like _S. platanifolia_, which are foliaceous in texture and open very early in the course of their development.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Mr. Berkeley's carnation the change was not so great, seeing that the nucleus of the ovule was not developed, and sufficient evidence has been above given as to the foliar nature of the primine, while for a leaf to be folded up so as to form a carpel is an ordinary occurrence.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The bisexual flowers generally consist of carpels and staminodes inserted on the same whorl.
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The tendency to petalification is, moreover, greater among those plants which have their floral elements arranged in spiral series, than among those where the verticillate arrangement exists; and in any given flower, if the stamens are spirally arranged while the carpels are grouped in whorls, the former will be more liable to petalody than the latter, and _vice versâ_.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The nectary originates from the several outer layer cells of base of carpel primordia.
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In all but two plants examined, this flower matured as a hermaphrodite; in the exceptions, the carpel aborted, producing a male flower.
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Advance has been along two lines, markedly in relation to insect-pollination, one of which has culminated in the hypogynous epipetalous bicarpellate forms with dorsiventral often large and loosely arranged flowers such as occur in Scrophulariaceae, and the other in the epigynous bicarpellate small-flowered families of which the Compositae represent the most elaborate type.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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The berries in the most derived clade (Olmstead et al.'s subfamily ‘Solanoideae’) are all morphologically similar, with two carpels, axile placentation and mostly lenticular seeds.
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In abnormal male flowers, stamens develop as carpelloid structures, whilst in abnormal female flowers, the staminodes (vestigial stamens) develop as pseudocarpel structures.
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Early angiosperm fruits were apocarpous, with several free carpels.
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First, we have in the bottom from which the mere structure of an ovary is deduced, the normal dicarpellary structure, and there is in addition a tendency in excess toward a parietal placentation.
Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries
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We showed that CmACS-7 is specifically expressed in carpel primordia, and, in andromonoecious genotypes, a missense mutation leads to loss of enzymatic activity.
PLoS ONE Alerts: New Articles
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Plants adapted to outcross or cross-pollinise have taller stamens than carpels to better spread pollen to other flowers.
Pollination
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During later stages of development, the entire ovary wall of typical flowers is formed by the concrescence of the walls of adjacent carpels.
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Five united stamens are adnate to the top of the pistil, which is made up of five connate carpels.
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In one case the carpel was closed above, gaping below, where it gave origin to several leaflets, the lower ones oval, dentate, like ordinary leaflets, the upper ones merely lanceolate, leafy lobes, representing the primine reduced to a foliaceous condition.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The cocoa flower has five free sepals, five free petals, five staminodes, five stamens and an ovary of five united carpels.
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The complex polymerous flowers of water lilies with no clear differentiation between sepals and carpels fit very well into the euanthian school of flower origin theories.
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Each carpel has a terminal stigma and a basal ovary with a single ovule.
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Flowers are apocarpous, with up to five carpels (usually two to three).
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Phyllanthus, the carpella of which are ovuliferous below, the upper part being fleshy, the stigmata are two to each, obviously corresponding to the placentary inflexions, while the sinus terminating the dorsal suture is totally naked; it is this which should bear the stigma if Lindley's view were correct.
Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries
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It will be remembered, also, how, in certain natural orders, under ordinary circumstances, considerable diversity in placentation exists, according as the margins of the carpels are merely valvate or are infolded so as to reach the centre.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Unisexual flowers with three white petals produce numerous stamens or carpels and both present floral nectar.
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These, as in Gymnosperms, are of two kinds, microspores or pollen-grains, borne in the stamens (or microsporophylls) and megaspores, in which the egg-cell is developed, contained in the ovule, which is borne enclosed in the carpel (or megasporophyll).
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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In these plants, some sepals showed homeotic transformations to carpels, becoming fused and presenting ovules and stigmatic papillae.
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Unisexual flowers with three white petals produce numerous stamens or carpels and both present floral nectar.
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In Convolvulaceae the median plane of the flower bisects the two carpels of the gynoecium and is axillary.
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In the center of a typical flower are the carpels, modified leaves which enclose the ovules.
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In some varieties of the orange, called by the French "bigarades cornues," the thalamus of the flower, which is usually short, and terminated by a glandular ring-like disc, is prolonged into a little stalk or gynophore, bearing a ring of supernumerary carpels.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The female reproductive structures of flowers are the carpels, which are either free, or are fused to form a compound ovary.
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On the whole, taking in consideration cases of partial frondescence, as well as those in which most of the parts of the flower are affected, phyllody would seem to be most common in the petals and carpels, least so in the case of the stamens and sepals.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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A floral meristem gives rise in sequence to sepals, petals, stamens, and carpels.
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In _Delphinium_, as shown by Braun, [376] the stamens and carpels are members of a continuous spiral series, and in the double balsam an extra corolline whorl is produced, without the suppression of the stamens, in the following manner: the ordinary stamens are replaced by petals, the carpels by stamens, while an additional whorl of carpels is produced at the summit of the axis.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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Here, therefore, is a symmetrical and complete, regular, but dimerous orchideous flower, the first verticil of stamens not antheriferous, the second antheriferous, the carpels alternate with these; and here we have clear (and perhaps the first direct) demonstration that the orchideous type of flower has two stamineal verticils, as Brown always insisted.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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It will be remembered, also, how, in certain natural orders, under ordinary circumstances, considerable diversity in placentation exists, according as the margins of the carpels are merely valvate or are infolded so as to reach the centre.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
