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Investigations into the evolutionary history of theAntennaria rosea (Asteraceae: Inuleae) polyploid complex

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Abstract

TheAntennaria rosea polyploid agamic complex is one of the most morphologically diverse and widespread complexes of N. AmericanAntennaria. The group is taxonomically confusing because of numerous agamospermous microspecies, having been recognized as distinct species. Morphometric analyses have demonstrated that the primary source of morphological variability in the complex derives from six sexually reproducing progenitors,A. aromatica, A. corymbosa, A. media, A. microphylla, A. racemona, andA. umbrinella. Additionally, two other sexually reproducing species,A. marginata andA. rosulata, may have contributed to the genetic complexity of theA. rosea complex. Cluster analysis indicates that four discrete morphological groups exist within theA. rosea complex. Each group could be the result of predominance of genes from different groups of sexual progenitors. AsA. rosea is of multiple hybrid origin, from among several sexual progenitors, it is advisable to recognizeA. rosea as a distinct species from its sexual progenitors.

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Authors and Affiliations

  1. Department of Botany, University of Alberta, T6G 2E9, Edmonton, Alberta, Canada

    Randall J. Bayer

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  1. Randall J. Bayer
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Investigations into the evolutionary history of the polyploid complexes inAntennaria (Asteraceae: Inuleae). 3. TheA. rosea complex.

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Bayer, R.J. Investigations into the evolutionary history of theAntennaria rosea (Asteraceae: Inuleae) polyploid complex. Pl Syst Evol 169, 97–110 (1990). https://doi.org/10.1007/BF00935988

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