A nectar spur is a hollow extension of a part of a flower. The spur may arise from various parts of the flower: the sepals, petals, or hypanthium, and often contain tissues that secrete nectar. Nectar
Nectar spurs on Aquilegia.
Side view of Tropaeolum majus, a plant with a nectar spur arising from the hypanthium of the flower.
The long tongue of a sphinx moth is depicted as reaching into the equally long-spurred orchid.
Angraecum, also known as comet orchid, is a genus of the family Orchidaceae native to tropical and South Africa, as well as Sri Lanka. It contains 223 species.