Nectary

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nectary

[′nek·tə·rē]
(botany)
A secretory organ or surface modification of a floral organ in many flowers, occurring on the receptacle, in and around ovaries, on stamens, or on the perianth; secretes nectar.

Nectary

 

the glands of a plant that secrete a sugary juice, or nectar. Nectaries are generally located in the interior of the floral cup, but they are sometimes situated outside of the flowers. The glands promote cross-pollination by attracting pollinators, primarily insects, to the flowers. (In the tropics, birds and, on rare occasions, bats serve as pollinators.)

Nectaries occur on the flower receptacle (for example, in the honeysuckle Lonicera iberica), on the interior or superior side of the sepals (in lindens), inside the spur (in nasturtiums), on the petals (in crowfeet), on the processes of the staminal connective (in violets), or at the base of the pistil (in buckwheat). In flowers that have an inferior ovary (plants of the families Umbelliferae, Dipsacaceae, and Compositae), the nectaries are located over the ovary and around the base of the styles. In some plants, flower organs (for example, the petals of meadow saffron) are converted into nectaries; in some rare cases (edelweiss and some acacias) a few flowers in the inflorescence develop into nectaries. Extra-floral nectaries are located on the basal parts of the cotyledons (in Ricinus), on the petioles (in mazzard cherry and plum), on the stipules (in vetch), on the bracts (in cotton), or on the leaflets of the involucres (in some species of Centaurea).

The cells of the tissue that elaborates nectar are for the most part small, thin-walled, and rich in protoplasm; often they constitute groups of special epidermal cells lacking cuticles (for example, the nectaries of apple blossoms). Nectar is usually secreted through the walls of the surface cells or, in some cases, through special stomata.

References in periodicals archive ?
Do ant visitors to extrafloral nectaries of plants repel pollinators and cause an indirect cost of mutualism?
Higher ant visitation to extrafloral nectaries can favor the production of flowers or fruits of this plant and reduce damage to C.
No diagnostic key for evaluating the authencity of "chiraito" exists despite the true "chiraito" having some distinct characteristics compared to other substitutes and adulterants by its morphological and chemical characteristics such as brownish- purple stem (dark color), continuous yellowish pith and petals with double nectaries and intense bitterness.
Nectaries in some Neotropical species of Polypodium (Polypodiaceae): preliminary observations and analyses.
Honey, produced by the insect species of the genus Apis (commonly known as Honeybees), is a sweet and tasty nutritious product, and the raw material for honey is necter produced in the nectaries in the flowers.
pollination by insects that are attracted to the nectaries, and this in
Extrafloral nectaries (EFNs), for example, occur in 93 flowering plant and five fern families (Koptur 1992).
Independent observations of members of Thomisidae (crab spiders), Salticidae (jumping spiders), and the active, fast-moving Anyphaenidae, Miturgidae, and Corinnidae--all wanderers in foliage--suggest that all feed at the floral and extrafloral nectaries (EFNs) of plants (Edmunds 1978; Vogelei & Greissl 1989; Pollard et al.
I love the singled flowered varieties, particularly the ones with pure white rounded petals with dark magenta nectaries (centres).
We focused on six native species that were abundant and had floral morphologies (flower shapes) that varied from legumes with hidden nectaries and anthers (purple locoweed [Oxytropis lambertii] and American vetch [Vicia americana]), to species with dish-shaped flowers and obvious pollen and nectar (prairie flax [Linum lewisii], yellow sundrops [Calylophus serrulatus], and scarlet globemallow [Sphaeralcea coccinea]), to the bell-shaped flowers of blue bellflower (Campanula rotundifolia).