Perianth


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perianth

the outer part of a flower, consisting of the calyx and corolla
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Perianth

 

in the flowers of angiosperms, the modified bracts that surround the stamens and pistils. Simple perianths are composed of bracts of the same color. Tulips, lilies, buckwheat, beets, and goosefoot have simple perianths. Perianths with small, usually green calyxes and larger, variously colored coronas are said to be double. Such perianths characterize wild roses, crowfoot, and bellflowers.


Perianth

 

(1) A covering surrounding the generative organs of angiospermous plants.

(2) A covering surrounding the archegonium of most liverworts.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

perianth

[′per·ē‚anth]
(botany)
The calyx and corolla considered together.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Where we live, the wild daffodil Narcissus pseudonarcissus grows in profusion, its chrome yellow trumpets surrounded by pale primrose perianths. Though it's only eight inches high, the impact it creates is dramatic.
The perianth is oblonge-cylindric, terete, with a few weak folds above.
However, aesthetically, its rare ivory white perianth (petals) and two coloured corona (trumpet) in both amber-orange and buttermilk white, means that Alnwick Magic will always be distinctly visible in its striking clusters to both visitors and gardeners alike."
The individual unisexual flowers lack a perianth, the pistillate flower consisting of 1 (rarely 2) pistil(s) subtended by a scale, and the staminate flower consisting of 1-3 stamens borne in a scale.
Fruit obovoid to 2 cm high and 1.8 cm in diameter, often with abortive carpels visible and more or less developed, exocarp nearly smooth when fresh, red at maturity, dotted with lenticels, perianth with triangular petals, staminodes triangular, obtuse at apex, to 2 mm long, sometimes with abortive anther.
After separating the perianth parts and stamens, stigmas with three parts were collected and weighted on an analytical scale.
Together, the calyx and corolla are termed the perianth.
Refuge use by the coconut mite Aceria guerreronis: Fine scale distribuition and association with other mites under the perianth. Biological Control, San Diego, v.43, n.1, p.102-110, 2007.
The paratype collection represents a xanthic color form with the "perianth white" and the "inflorescence golden yellow" (!
Like nearly all other Nyctaginaceae, the fruit is an achene, surrounded by an "anthocarp," a persistent accessory fruit that develops from the lower part of the uniseriate perianth. In Tripterocalyx, the anthocarp enlarges greatly, hardens, and develops three or four large, membranaceous wings.