The correlation between these changes is well shown when one of the two upper petals alone loses its dark mark, for in this case the nectary does not entirely abort, but is usually much reduced in length.
In the peloric flowers, the nectary aborts; all the petals become alike both in shape and colour; the stamens are generally reduced in number and become straight, so that the whole flower resembles that of the allied genus Erodium.
The unchanged insects will therefore be confined to the unchanged flowers, while the changed insects will be indifferent on the subject, as they will be able to reach the nectary in any case.
Now were the opening of the nectary at this point unimpeded, the same condition would exist as in the H.
In the Arethusa, it is true, the butterfly or moth might sip at the throat of the flower, but the long tongues of these insects might permit the nectary to be drained without bringing their bodies in contact with the stigma.
The nectary implies a welcome to a tongue two inches long, and will reward none other.
If an orchid has a nectary one inch long, an insect's tongue of equivalent length is implied; a nectary six inches in length likewise implies a tongue six inches long.
Its nectary tube is five inches in length, and as slender as a knitting-needle.
The nectary is about the length of a bumblebee's tongue, and is, moreover, so amply expanded at the throat below the stigma as to comfortably admit its wedge-shaped head.
On your hypothesis there must be a moth with a tongue eleven inches long, or this nectary would never have been elaborated.
The evolution of the long nectaryimplies an adaptation to an insect's tongue of equal length.
At E we see the moth with its tongue entering the nectary of a subsequent blossom.
The tendency towards the perpetuation of the short nectary is therefore stopped, while that of the longer nectary is insured.
The nectary here, instead of being freely open, as in other orchids described, is abruptly closed at the central portion by a firm protuberance or palate, which projects downward from the base of the stigma, and closely meets the lip below.
About Matlock in Derbyshire the fly-ophris is produced, the nectary of which so much resembles the small wall-bee, perhaps the apis ichneumonea, that it may be easily mistaken for it at a small distance.
Gay says that in certain districts, especially in Auvergne, the nectary of the wild V.
In a large number of flowers, on the other hand, examined by me in 1856 from a nursery-garden in a different part of England, the nectary hardly varied at all.
The differences in the form of the nectary more especially deserve notice; because characters derived from this organ have been much used in the discrimination of most of the species of Viola.
Few things in nature can be more beautiful than the nectary and the honey drops in the crown imperial.
Darwin considers the honey secreted by the nectary to be the natural food with which the stamens and pistils are nourished.
The nectarywithin the base of the shorter stamens seems to cause the end sepals apparently, but not really, to arise beneath the lateral sepals.
Especially attend about the nectary exterior to the staminal tube.
Hence even the thin nectary is essentially, I infer, tripartite; hence its tendency to bifurcation at its top.
A nectary is found in many orders of plants and is especially common in the Orchids, but in this one case only is it more than a foot long.
But this would lead in time to such an increased length of the nectary that many of the moths could only just reach the surface of the nectar, and only the few with exceptionally long trunks be able to suck up a considerable portion.
I may here mention that some of the large Sphinx moths of the tropics have probosces nearly as long as the nectary of Angræcum sesquipedale.
But there are an immense variety of moths, of various lengths of proboscis, and as the nectary became longer, other and larger species would become the fertilizers, and would carry on the process till the largest moths became the sole agents.
Long before his death a sphinx moth arrived from South Brazil which shows a proboscis between ten and eleven inches long--very nearly equal, therefore, to the task of probing the nectary of Angræcum sesquipidale.
Not only the abnormal length of the nectary had to be considered; there was, besides, the fact that all its honey lay at the base, a foot or more from the orifice.
Gay says that in certain districts, especially in Auvergne, the nectary of the wild V.
The flowers expand, and a set of vessels pour into the cup or nectary a minute portion of honey.
The bee is small, the load of honey brought home by it is still less, and the quantity secreted in the nectary of each flower, yet more minute.
When the colour is absent from only one of the two upper petals, the nectary is not quite aborted but is much shortened.
Even the nectary which is adherent to the upper surface of the pedicel in the normal flower disappears--sometimes completely, at other tunes partially.
Stamens 15, inserted on the border of the nectary by threes, forming a triangle.
Nectary bell-shaped, surrounding the ovary, shorter than the calyx, with 4 toothlets which lengthening form the filaments of as many stamens.
Anthers equal in number to the teeth of the nectary and inserted between them.
Nectary a cylindrical tube attached to the corolla for half its length, mouth 10-toothed, containing 10 sessile anthers.
The importance of the nectary in the economy of vegetation is explained at large in the notes on part the first.
The nectary of this plant grows from what is supposed to be the calyx; but this supposed calyx is coloured; and perhaps, from this circumstance of its bearing the nectary, should rather be esteemed a part of the coral.
The nectaryof the Tropaeolum, garden nasturtion, is a coloured horn growing from the calyx.
As the claw of the standard petal and the calyx are short, he need not have a long tongue to drain the nectary pointed out to him by a triangular white mark at the base of the banner.
The veins on the petals serve as pathfinders to the nectary for the bee, and the beard as footholds, while she probes the inverted blossoms.
The yellow palate, which partially guards the entrance to the nectary from pilferers, of course serves also as a pathfinder to the long-tongued bees.
Toward the two little gleams of light through apertures at the end of a passage beyond the nectary hairs, he at length finds his way.
Sprengel's notion of the use of these marks as guides appeared to me for a long time fanciful; for insects, without such aid, readily discover and bite holes through the nectary from the outside.
There is an abundant supply of nectar in the nectary of Tropaeolum tricolor, yet I have found this plant untouched in more than one garden, while the flowers of other plants had been extensively perforated; but a few years ago Sir J.
Nevertheless, as the nectarycontains much nectar, especially in the evening, I felt convinced that they were visited, probably by moths.
When the nectary is only partially aborted, only one of the upper petals loses its mark.
Lubbock's gardener assured me that he had seen humble-bees boring through the nectary of this Tropaeolum.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "nectary" in a variety of sentences. We hope that you will now be able to make sentences using this word.
