Pedicel (botany)

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The inflorescence of Delphinium nuttallianum. Each flower is held on a pedicel from one to several centimeters long. Delphinium nuttallianum 15498.JPG
The inflorescence of Delphinium nuttallianum . Each flower is held on a pedicel from one to several centimeters long.

A pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as pedicellate.

Contents

Description

Pedicel refers to a structure connecting a single flower to its inflorescence. [1] In the absence of a pedicel, the flowers are described as sessile. 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]

In cultivation

In Halloween types of pumpkin or squash plants, the shape of the pedicel has received particular attention because plant breeders are trying to optimize the size and shape of the pedicel for the best "lid" for a "jack-o'-lantern". [5]

Diagram of flower parts Mature flower diagram.svg
Diagram of flower parts

See also

Related Research Articles

Inflorescence Term used in botany to describe a cluster of flowers

An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern.

Raceme Unbranched, indeterminate type of inflorescence bearing pedicellate flowers along its axis

A raceme or racemoid is an unbranched, indeterminate type of inflorescence bearing pedicellate flowers along its axis. In botany, an axis means a shoot, in this case one bearing the flowers. In indeterminate inflorescence-like racemes, the oldest flowers are borne towards the base and new flowers are produced as the shoot grows, with no predetermined growth limit. A plant that flowers on a showy raceme may have this reflected in its scientific name, e.g. Cimicifuga racemosa. A compound raceme, also called a panicle, has a branching main axis. Examples of racemes occur on mustard and radish plants.

Bract

In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are often different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture. Typically, they also look different from the parts of the flower, such as the petals or sepals. The state of having bracts is referred to as bracteate or bracteolate, and conversely the state of lacking them is referred to as ebracteate and ebracteolate, without bracts.

<i>Commelina</i> Genus of flowering plants

Commelina is a genus of approximately 170 species commonly called dayflowers due to the short lives of their flowers. They are less often known as widow's tears. It is by far the largest genus of its family, Commelinaceae. The Swedish taxonomist Carl Linnaeus of the 18th century named the genus after the two Dutch botanists Jan Commelijn and his nephew Caspar, each representing one of the showy petals of Commelina communis.

Peduncle (botany) the stalk of a plant bearing an inflorescence or solitary flower

In botany, a peduncle is a stem supporting an inflorescence, or, after fecundation, an infructescence.

Scape (botany) long non-woody, leafless segment between two leaf-bearing regions of a plant

In botany, a scape is a long internode that forms the basal part or the whole of a peduncle. Typically it takes the form of a long, leafless flowering stem rising directly from a bulb, rhizome, or similar subterranean or underwater structure.

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Allotropa virgata is in the family Ericaceae and is the only species of the genus Allotropa. It is a perennial plant that gets its common names from the distinct white and red or maroon stripes along its erect peduncle. A. virgata are nongreen as they lack chlorophyll, instead obtaining nutrition from neighboring green plants through a fungal intermediate. Allotropa virgata feeds exclusively on Matsutake mushroom mycelium.

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<i>Pimelea physodes</i>

Pimelea physodes, commonly known as Qualup bell, is a species of shrub that is endemic to Western Australia. It has egg-shaped to narrow elliptical leaves and distinctive bell-like inflorescences with tiny greenish flowers surrounded by long elliptical bracts. The inflorescence resembles those of some of the only distantly-related darwinia "bells" and the bracts are a combination of red, purple, green and cream-coloured.

This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology. For other related terms, see Glossary of phytopathology and List of Latin and Greek words commonly used in systematic names.

Sessility (botany) Leaves or flowers that grow directly from the stem or peduncle of a plant

In botany, sessility is a characteristic of plant parts that have no stalk. Flowers or leaves are borne directly from the stem or peduncle, and thus lack a petiole or pedicel. The leaves of most monocotyledons lack petioles.

<i>Nepenthes andamana</i>

Nepenthes andamana is a tropical pitcher plant endemic to Phang Nga Province, Thailand, where it grows near sea level in coastal savannah and grassland. It is thought to be most closely related to N. suratensis.

<i>Nepenthes chang</i>

Nepenthes chang is a tropical pitcher plant endemic to the Banthad Mountains of central Thailand, where it grows at elevations of 300–600 m above sea level. It is thought to be most closely related to N. kampotiana.

<i>Astroloba robusta</i>

Astroloba robusta is a small succulent plant of the genus Astroloba indigenous to the arid southern Cape regions of South Africa. It is the most widespread Astroloba species.

<i>Hypericum majus</i>

Hypericum majus, the greater Canadian St. John's wort, is a perennial herb native to North America. The specific epithet majus means "larger". The plant has a diploid number of 16.

<i>Cecarria</i>

Cecarria is a monotypic genus in the family Loranthaceae. The sole species is Cecarria obtusifolia, a hemiparasitic aerial shrub.

<i>Psittacanthus cucullaris</i>

Psittacanthus cucullaris is a species of mistletoe in the family Loranthaceae, and is native to Costa Rica, Bolivia, Colombia, Ecuador, French Guiana, Peru, Suriname, Venezuela and Brazil.

<i>Protea sulphurea</i> Species of flowering plant in the family Proteaceae

Protea sulphurea, also known as the sulphur sugarbush, is a flowering plant of the genus Protea in the family Proteaceae, which is only known to grow in the wild in the Western Cape province of South Africa. A vernacular name for the plant in the Afrikaans language is heuningkoeksuikerbos.

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References

  1. Hickey, M.; King, C. (2001). The Cambridge Illustrated Glossary of Botanical Terms. Cambridge University Press.
  2. Walter William Skeat (1898). An Etymological Dictionary of the English Language (3 ed.). Clarendon Press. p.  430.
  3. Chris Bird, ed. (2014). The Fundamentals of Horticulture: Theory and Practice. Cambridge University Press. p. 136. ISBN   9781107782549.
  4. EB 2019.
  5. Breeding a better pumpkin - Technology & science - Science | NBC News

Bibliography