
Nectar of camellia
'Nectar', in
botany, is a
sugar-rich liquid produced by plants. It is produced either by the
flowers in order to attract
pollinating animals or by or
extrafloral nectaries in order to supply a nutrient source to animals providing anti-hibovor protection. It is produced in glands called ''nectaries''
Floral Nectaries
Floral nectaries are generally located at the base of the
perianth, so that pollinators are made to brush the flower's reproductive structures, the
anthers and
pistil, while accessing the nectar.
Extrafloral Nectaries
Nectar that is produced outside the flower is generally produced to attract predatory insects. These predatory insects will eat both the nectar and any plant-eating insects around, thus functioning as 'bodyguards'
[1].
Extrafloral nectaries are generally located on the leaf petioles, mid-rib or leaf margin. They are thought to be modified trichomes and exude nectar that is sourced from
phloem sap.
Extrafloral nectaries can be found on species belonging to (amongst others) the genera: ''
Salix'', ''
Prunus'' and ''
Gossypium''.

Extrafloral nectaries on ''Prunus africana''
Nectar is economically important as it is the sugar source for
honey. It is also useful in
agriculture and
horticulture because the adult stages of many predatory insects, as well as
hummingbirds and butterflies, feed on nectar.
See also
★
Nectar source
★
Nectar guide
★
Northern Nectar Sources for Honey Bees