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Pedicel is also applied to the stem of the infructescence. The word "pedicel" is derived from the Latin pediculus, meaning "little foot". [2] The stem or branch from the main stem of the inflorescence that holds a group of pedicels is called a peduncle. [3] A pedicel may be associated with a bract or bracts. [4]
Pedicel (antenna), the second segment of the antenna in the class Insecta, where the Johnston's organ is found Pedicel or petiole (insect) , the stem formed by a restricted abdominal segment which connects the thorax with the gaster (the remaining abdominal segments) in the suborder Apocrita
Ricinulei is a small order of arachnids.Like most arachnids, they are predatory; eating small arthropods.They occur today in west-central Africa and the Americas (Cryptocellus and Pseudocellus) from South America to as far north as Texas, where they either inhabit leaf-litter or caves.
The three basic segments of the typical insect antenna are the scape or scapus (base), the pedicel or pedicellus (stem), and finally the flagellum, which often comprises many units known as flagellomeres. [10] The pedicel (the second segment) contains the Johnston's organ which is a collection of sensory cells. [11]
The petiole is occasionally called a pedicel, but in entomology, that term is more correctly reserved for the second segment of the antenna; [1] [2] while in arachnology, 'pedicel' is the accepted term to define the constriction between the cephalothorax and abdomen of spiders.
Johnston's organ is a collection of sensory cells found in the pedicel (the second segment) of the antennae in the class Insecta. [2] Johnston's organ detects motion in the flagellum (third and typically final antennal segment). It consists of scolopidia arrayed in a bowl shape, each of which contains a mechanosensory chordotonal neuron.
The pedicel of a flower is 1.5–4.5 centimetres (0.59–1.77 in) long while the species' sepal is ovate to ovate-oblong, bell-shaped, 7–10 millimetres (0.28–0.39 in) long and is as white powdered as the flowering stem. Petals are broadly obovate and prominently toothed tips. They bloom from March to April. [3]
Flowers are solitary, bisexual, radial, with a long pedicel and usually floating or raised above the surface of the water, with girdling vascular bundles in receptacle. [ 11 ] [ 12 ] Some species are protogynous and primarily cross-pollinated, but because male and female stages overlap during the second day of flowering, and because it is self ...