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10 - Caryophyllids

How to Reinvent Lost Petals

from Part II - Floral Diagrams in the Major Clades of Flowering Plants

Published online by Cambridge University Press:  11 March 2022

Louis P. Ronse De Craene
Louis P. Ronse De Craene
Affiliation:
Royal Botanic Garden Edinburgh
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Summary

Floral diagrams are presented for twenty-one families of the highly diverse orders caryophyllales and polygonales. The caryophyllids represent a small but important clade close to the asterids. The flowers show important evolutionary trends linked with a progressive loss of petals, and their reinvention of petal-like structures in derived groups, such as coloured sepals or staminodes. Stamen evolution also shows unique trends linked with spatial constraints and secondary multiplications. The ovary shows a general tendency to the development of central placentas and the reduction in the number of ovules. Floral diagrams are used to illustrate the major evolutionary trends within caryophyllales and specifically within the diverse family Polygonaceae, in addition to specific diagrams representative of families.

Keywords

polygonalescore caryophyllalespetal losspetaloidyplacentationstamen loss
Type
Chapter
Information
Floral Diagrams
An Aid to Understanding Flower Morphology and Evolution
 , pp. 301 - 340
Publisher: Cambridge University Press
Print publication year: 2022

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