petal

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petal,

one of the four basic parts of a flowerflower,
name for the specialized part of a plant containing the reproductive organs, applied to angiosperms only. A flower may be thought of as a modified, short, compact branch bearing lateral appendages.
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, next innermost organ from the sepal. The whorl of petals is known collectively as the corolla [Lat.,=little crown]. The number of petals is usually constant within groups (e.g., five in the rose family), as are the numbers of the other organs. Identification by number is, however, complicated by various factors; the petals may be fused, inconspicuous, or entirely absent, in which case their role as the showy part of the flower is sometimes supplanted by modified leaves, the bracts, as in the dogwood and poinsettia, or by modified stamens, as in the canna and the lady's-slipper. Selective breeding can produce petallike stamens (e.g., in cultivated roses and geraniums) and so-called double flowers, i.e., varieties with more than the normal number of petals. Petals are usually brightly colored and often secrete perfume and nectar (in nectaries at the base of the petal) that attract insects and birds needed for cross-pollination. When fertilization has taken place the petals usually drop off; however, in some flowers they persist (see everlastingeverlasting
or immortelle
, names for numerous plants characterized by papery or chaffy flowers that retain their form and often their color when dried and are used for winter bouquets and decorations.
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). In general there are fewer petals and their fusion is greater as the evolutionary development increases. Radially symmetrical arrangement also gives way to bilateral symmetry or even asymmetry.

Petal

 

a leaflike member of the corolla in a flower, which is generally brightly colored. In sympetalous plants, the petals are grown together to some degree. The leaflets of simple corolliform perianths are sometimes erroneously called petals.

petal

[′ped·əl]
(botany)
One of the sterile, leaf-shaped flower parts that make up the corolla.

petal

One of the overlapping shingles or tiles in imbrication.

petal

any of the separate parts of the corolla of a flower: often brightly coloured
References in periodicals archive ?
Corola color azul a celeste, de 12-14 mm, tubo de 9 mm, labio superior de 6 mm, labio inferior de 10 mm.
19-25), por la presencia de tricomas glandulosos en la corola (corola glandulosa vs.
Las flores son zigomorfas, erguidas con una corola tubular, sin olor perceptible, externamente anaranjado rojizo, internamente amarillo con puntos rojos en la base, y con notables glandulas en el interior de los lobulos de la corola.
Corola amarillo descolorido con el centro purpura; petalos 5, obovados, minutamente puberulentos en la cara abaxial.
Inflorescencias en cimas corimbosas, laxas, terminales; cabezuelas homogamas o heterogamas, irregularmente corimbiformes; involucro cilindrico a turbinado, las bracteas en 2-3 series, subiguales, lineares a obovadas, verdes, membranosas, el margen usualmente tenido de color purpura, la pubescencia glandular, el receptaculo plano, desnudo; flores liguladas cuando presentes, 3-lobuladas, femeninas, fertiles, de color violeta; flores del disco infundibuliformes o campanuladas, hermafroditas, fertiles; corola 5-lobulada, zigomorfa o actinomorfa, blancas a violetas; anteras 5, apendiculadas, los apendices apicales ovados, cortos, las bases obtusas; estilo con ramas lineares aplanadas.
A traves del analisis de correspondencia multiple (ACM) la variabilidad en los materiales se explico por los dos primeros componentes en los cuales las caracteristicas de mayor aporte fueron color de las maculas (CM), color de las anteras (CA), color de la baya madura (CBM), color de la semilla (CS) y prolongacion del color secundario en la corola (PCSC).
2 mm largo, soldados, glabros a ciliados, o piloso-glandulares; corola gamopetala pentalobulada, anaranjada, rojiza-anaranjada a amarillenta, tubular, regular, 3-5 cm largo, tubo floral con una giba en la base, lobulos lanceolados a elipticos, 6-10 mm largo, glabra a pilosa y con pelos glandulares externamente, pilosa internamente, glandula nectarifera presente en la giba de la corola; estambres ligeramente exertos, pilosos en la base, anteras 5 mm largo; pistilo 32-55 mm de largo, glabro, estigma capitado.
lycocarpum verificou-se que alem do gineceu, a corola das flores com estilete longo apresenta maior diametro do que a corola das flores com estilete curto.
Estos botones, presentaban un diametro en la base de la corola de 0,42 cm y un eje polar de 0,90 cm.
De cada especie vegetal, se registraron datos de la longitud total y la efectiva de la corola (Gutierrez 2005) de por lo menos diez flores, el color de la corola, forma (recta o curva) y habito de crecimiento de la planta (arboreo, arbustivo, herbaceo o trepador).
Na caracterizacao morfoagronomica dos acessos, levando-se em conta o potencial ornamental, tomou-se como base os descritores estabelecidos pelo Internacional Plant Genetic Resources Institute para o genero Capsicum (IPGRI, 1995), atualmente Bioversity International, e os padroes de qualidade estabelecidos pelo Instituto Brasileiro de Floricultura (IBRAFLOR, 2011), quanto aos criterios de classificacao para pimentas ornamentais no Brasil relacionados a seguir: forma da folha, habito de crescimento da planta, antocianina no no da planta, posicao da flor, cor da corola, cor do fruto no estado intermediario e maduro, forma do fruto, forma do apice do fruto, textura da epiderme do fruto, comprimento do fruto, comprimento do pedicelo, persistencia do fruto maduro e altura da planta.