Either theanthers or the stigmas are abortive or partially so, or in other words, the perfect stigmas are usually associated with abortive anthers and vice versa.
One has but to touch the large pendent anthers to get a practical demonstration of how the pollen is attached to the body of a bee and carried to another flower, there to be deposited on the sticky stigma of the mature style.
Others have either the anthers or stigma ripen first, so that it must necessarily be pollen from another blossom that quickens the seed.
The eight stamens are long and slightly unequal, the anthers being exceptionally large and bright golden-yellow.
These beards compel visiting insects to brush against the stigma and then against the anthers before reaching the nectar in the short spur.
Their shapes, forms, and mechanisms are about like those of the Mountain Laurel, but the color is a beautiful, deep pink; little red anthers fit snugly in the ten little pockets formed for them in the surface of the corolla.
The flower is bell-shaped, with three short, sharply-pointed spreading lobes; six stamens with shortanthers and a thick style with six radiating stigmas.
The anthers mature before the stigma is developed so that self-fertilization is impossible.
The stamens project from the throat of the flower, the five golden anthersforming a conspicuous cone.
Alexander Braun notices the transformation of pistils into stamens in Chives (Allium Scorodoprasum), and in which three stamens appeared in the place of as many pistils, and had extrorse anthers, while the six normal anthers are introrse.
The presence ofanthers on petals or on such organs as the corona of Narcissus does not necessarily constitute those parts actual stamens, but rather staminodes.
Signor Licopoli met with a similar substitution of anthersfor bracts in Melianthus major.
In some cases imperfect stamens were found, mere barren filaments, with or without rudimentary anthers at the top.
Mohl[346] remarks that, in the transformation of the stamens to the pistil in the common houseleek, the filament of the stamen generally preserves its form, the anthers alone undergoing change.
But the anthers are buds upon a floral rib; consequently all sexual plants must have a part of the blossom, which ranks in the signification of leaf, and thus either the calyx or, with this also, the corolla.
Now, the anthers are leaf-buds; the leaf-formation must be therefore developed also in their antagonism, or in the seed.
The anthers are to be regarded as follicles, which mostly rupture upon the dorsal or external aspect.
Anthers can be wanting to none of the following plants.
The anthers are the male organs, the pollen is the semen.
This removal of the anthers is called emasculation.
The flower is generally emasculated by pulling out the antherswith pincers, but some large anthers can be hooked out easily by a very small crochet-hook or by a pin bent to a minute hook upon the point.
If the pollen is to be kept, the anthers should be picked just before ready to burst and laid upon paper in a warm, dry and shady place until they dry up and the pollen is all discharged.
It is many times a tedious operation, however, to pull out the anthers without crushing them, and thus distribute some of the pollen.
The anthers must then be removed, and the pollen is securely wrapped in dry paper.
The anthers and stigmas of flowers are probably nourished by the honey, which is secreted by the honey-gland called by Linneus the nectary; and possess greater sensibility or animation than other parts of the plant.
The former of these are secreted by the anthers from the vegetable blood, and the latter by the styles or pericarp; see the Additional Note VIII.
Around this splendid crowned seed-vessel are rows of stamens and purple anthers of richest hue.
The colorings vary from a light pink toning into beautiful deeper lavender tints, then lavender filaments and yellow anthers and stigma lobes of deep green, presenting a very beautiful color combination.
The filaments are dull scarlet, the anthers purple, and the stigma lobes bright green.
The stamens are rather short, and the anthers are yellow, while the filaments are of a light pink, toning off to green.
A flower that will expand in the morning should be opened the afternoon or evening previous, and the anthers all removed with a pair of pointed scissors.
Filaments half as long as the anthers or shorter =Wake Robin, Trillium declinatum.
Anthers just as many as the lobes of the corolla --103.
The stamens are attached to the corolla, and are united by their anthers into a tube which surrounds the style, and above which the 2-lobed stigma protrudes.
Filaments about as long as the anthers =Wake Robin, Trillium cernuum.
Microscopic examination of the stigma at the time of pollination also shows that the pollen from another flower usually germinates before the pollen which has fallen from the anthers of the same flower.
The mountain laurel, which makes our hillsides so beautiful in late spring, shows a remarkable adaptation in having the anthers of the stamens caught in little pockets of the corolla.
First the anthersmust be carefully removed from the bud of the flower so as to eliminate all possibility of self-pollination.
The anthers are exposed to the wind and provided with much pollen, while the surface of the stigma may be long and feathery.
Sprengel further discovered the fact that pollen could be and was carried by the insect visitors from the anthers of the flower to its stigma.
Some or all of the anthers become twisted so that insects in probing for honey will touch the anthers with one side of their head and the capitate stigma with the other.
Here it hastes to get its blossoming done before the rush of other plants, its little reddish stalk rising from a rosette of short leaves, and bearing the tiny terminal flowers with white deeply cleft petals and anthers of yellow hue.
The anthers at the base of the spadix are curious, and should be examined.
The stamens are very numerous, the anthers being closely arranged and of a rich golden colour; the flower stems grow from 9in.
The little soft creamy white flowers spring from the junction of the twin leaf-stalks; their anthers are bulky for so small a flower.
They are of a bright purple colour; petals ovate; the longish stamens carry bold anthers furnished with dark orange-coloured pollen, which forms a pretty feature.
A single blossom, if plucked dry and when in its prime, scents a small room; at such a stage, the anthers are loaded with pollen, and the tubular petals are richly charged with nectar.
The white petals show up the dark orange anthers finely.
Fruit a berry or capsule, petals deciduous and anthers with bristle-like appendages, chiefly north temperate to arctic in distribution.
The brightly coloured corolla, the presence of nectar and the scent render the flowers attractive to insects, and the projection of the stigma beyond the anthers favours crossing.
Rhododendron tribe, characterized by capsular fruit, seed with a loose coat, deciduous petals and antherswithout appendages.
Fruit usually a capsule, seeds round, not winged; corolla persisting round the ripe fruit; anthersoften appendaged.
The anthers show a very great variety in shape, the halves are often more or less free and often appendaged; they open to allow the escape of the pollen by a terminal pore or slit.
As in all the Compositæ, the anthersare here united in a tube, the pollen being discharged within.
The lower and older ones are conspicuous by their double feathery tails, the next by their extended anthers bearing the pollen at their extremity, and above these again the buds in all stages of growth.
When, therefore, we find a blossom with the anthers or pollen receptacle united to a stalk upon which the stigma is also placed, we have an orchid.
The principal botanical feature which differentiates the orchid from other plants lies in the construction of the floral organs, the pistil, stigma, and anthers here being united into a distinct part known as the column.
Observe how the anthers are placed so that pollen shall naturally fall directly on the stigmas and fertilize them!
Insects in approaching the nectar brush the pollen from the antherswith various hairy parts of their bodies, and in their motions convey it to the stigma.
Illustration] The anthersin this genus, then, are two, instead of the previous single anther with its two pollen-cells.
The anthers are divided by a V-shaped cavity, into which the insect's tongue is guided as it is withdrawn from the flower, and into which it often becomes so tightly wedged as to render escape impossible.
The freshly opened blossom discloses the entire ring of anthers in perfect equilibrium, each with its two orifices closed by close contact with the style, thus retaining the pollen.
Illustration] In most flowers, with the exception of the orchids, the stamens and pollen are plainly visible; but who ever sees the anthers of the blue-flag?
Involucre looser, the scales more acuminate or elongated or foliaceous; disk yellow (anthers dark).
Stamens 6; anthers linear, on short filaments, adnate, usually introrse; the cells opening down the margins.
Stamens inserted on the corolla; the fifth or posterior one, and sometimes the shorter pair also, sterile or rudimentary; anthers of 2 diverging cells.
Stamens 4, ascending under the upper lip; anthers approximate in pairs, 2-celled, the cells divergent.
Stamens 6, included, inserted on the base of the perianth; anthers introrse.
Stamens distinct or theanthers merely connivent, with ordinary pollen.
Every hybridizer knows how unfavourable exposure to wet is to the fertilisation of a flower, yet what a multitude of flowers have their anthers and stigmas fully exposed to the weather!
In this plant, the anthers open by two valves to let out the pollen.
The male sexual organs are named stamens, the anthers of which contain the pollen or fecundating matter.
Only after the stigma projects beyond the ring of anthers does it expand its lobes, which are now ready to receive pollen brought from another later flower by the incoming bumblebee to which it is adapted.
A mass of pulp between anthers and stigma prevents any of the flower's own pollen from self-fertilizing it.
Smaller bumblebees and some other bees which never or rarely try to suck hang under the anthers and work out the pollen by striking the trigger-like awns.
Slight weight depresses the keel, releasing the stigma and anthers therefore, so soon as a bee alights and opens the flower, he is hit below the belt by the projecting stigma.
When the inner row of anthers shed their pollen, some doubtless falls on the stigmas below them, and so spontaneous self-fertilization may occur.
Like their relatives, they first ripen their anthers to prevent self-fertilization.
In these showy magenta flowers, about one inch across, the stigmas and anthers mature simultaneously but cross-fertilization is usually insured because the former surpass the latter, and naturally are first touched by the insect visitor.
After the anthers have shed their pollen - and tiny teeth at the edges of the outer pair aid its complete removal by insects - the stigma comes up to occupy their place under the roof.
Since its stigma is widely separated from the anthers and surpasses them, it is probable the flower cannot fertilize itself, but is wholly dependent on the female bees and other insects that come to it for pollen.
Nevertheless, the hairy tips of some of the anthers brush off the pollen grains that may have lodged on the stigma as it passes through the ring in its ascent, thus making surety doubly sure.
As a rule, however, the parts which come in contact with the anthers are not those which come in contact with the stigmas in the same flower.
Protogyny pistil ripening before the anthers in the same flower, (proterogyny).
Protandry anthers ripening before the pistil in the same flower, (proterandry).
The fourth glume is similar to the third glume but smaller, paleate with rudimentary anthers and two fleshy lodicules.
Stamens are three and anthers are pale greenish yellow.
There are three stamens and the anthers are pale or purplish.
There are two lodicules and anthers are rather small.
But as the anthers are long and the connective is reduced to its minimum, they appear as if versatile when the stamens are out.
Stamens are three, with slender filaments, anthers are short, broad and pale yellow.
The anthers are yellow and they do not open until the stigmas and anthers of the fourth glume are thrown out.
I ask, by what means are the anthers in many flowers, and stigmas in other flowers, directed to find their paramours?
The approach of the anthers in many flowers to the stigmas, and of the pistils of some flowers to the anthers, must be ascribed to the passion of love, and hence belongs to sensation, not to irritation.
Vegetable structure like that of animals, their anthers and stigmas are living creatures.
Of these the anthers and stigmas have already been shewn to possess some organs of sense, to be nourished by honey, and to have the power of generation like insects, and have thence been announced amongst the animal kingdom in Sect.
Small Flies enter the flower apparently for shelter, but the hairs prevent them from returning, and they are kept captive until the anthers have shed their pollen.
In the other two the anthers or cells producing the pollen, which in most flowers form together a round knob or head at the top of the stamen, are separated by a long arm, which plays on the top of the stamen as on a hinge.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "anthers" in a variety of sentences. We hope that you will now be able to make sentences using this word.
