Phylogeny and adaptation in the Encelia alliance (Asteraceae: Heliantheae)

Phylogeny and adaptation in the Encelia alliance (Asteraceae: Heliantheae)

9/28/97

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Table of Contents

frutescens clade

californica clade

Spontaneous natural hybrids are common

Hybridization in Encelia

Species of hybrid origin

Shared phenotypic apomorphies - E. virginensis

Chimeric ITS: E. virginensis (13 base difference)

Shared phenotypic apomorphies - E. asperifolia

RAPD data: E. asperifolia

Chimeric ITS: E. asperifolia (21 base difference)

Theoretical Mechanisms

Theoretical Mechanisms

Xerophytic adaptations

Ecotypes of Encelia farinosa

Evolution of Encelia

Acknowledgments

Author: Curtis Clark

Email: jcclark@csupomona.edu

Home Page: http://www.csupomona.edu/~jcclark/