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pentacyclic flowers

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8 - Basal Pentapetalae
from Part II - Floral Diagrams in the Major Clades of Flowering Plants
Louis P. Ronse De Craene, Royal Botanic Garden Edinburgh
Book:

Floral Diagrams

Published online:

11 March 2022

Print publication:

07 April 2022, pp 172-183
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Summary

The Pentapetalae have diversified very rapidly, leading to two major successful clades, the superrosidae and superasteridae. Although it is still uncertain how the Pentapetalae diverged from ancestral flowers, their regular floral pentacyclic and pentamerous Bauplan is almost unversal and firmly established in all evolutionary lines. The possibility is presented that intermediates such as Berberidopsis regulate the transition from a spiral to a pentamerous pentacyclic flower. The diversity and unique evolutionary trends of early diverging orders with unclear affinity, Dilleniales and Santalales, are presented.