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Plant Systematics and Evolution

, Volume 169, Issue 3–4, pp 151–175 | Cite as

The genusAntennaria (Asteraceae: Inuleae) in western North America: Morphometric analysis ofAntennaria alborosea, A. corymbosa, A. marginata, A. microphylla, A. parvifolia, A. rosea, andA. umbrinella

  • J. G. Chmielewski
  • C. C. Chinnappa
  • J. C. Semple
Article

Abstract

Multivariate analysis of vegetative and reproductive characters was used to examine morphological relatedness amongAntennaria alboroseaA. E. Porsild,A. corymbosaE. Nels.,A. marginataGreene,A. microphyllaRydb.,A. parvifoliaNutt.,A. roseaGreene, andA. umbrinellaRydb. Both pistillate and staminate plants were examined. Some of the characters examined were variable in one species, but stable in another (i.e., presence or absence of papillae on the achenes). Our analyses indicate that the seven species are morphologically distinct. It is hypothesized that theA. rosea agamic complex arose through hybridization amongA. corymbosa, A. microphylla, A. umbrinella, and possiblyA. dioica (L.)Gaertn. However, hybridization between the three former species and others, as well as their subsequent morphological responses to different environmental conditions causes confusion in recognizing the taxa.Antennaria angustifoliaRydb.,A. aridaE. Nels.,A. confinisGreene,A. scariosaE. Nels.,A. foliacea humilisRydb.,A. concinnaE. Nels., andA. viscidulaE. Nels. are considered to represent F 1 hybrids.

Key words

Angiosperms Asteraceae Inuleae Antennaria alborosea A. corymbosa A. marginata A. microphylla A. parvifolia A. rosea A. umbrinella Taxonomy multivariate morphometrics 

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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • J. G. Chmielewski
    • 1
  • C. C. Chinnappa
    • 1
  • J. C. Semple
    • 2
  1. 1.Department of Biological SciencesUniversity of CalgaryCalgary, AlbertaCanada
  2. 2.Department of BiologyUniversity of WaterlooWaterloo, OntarioCanada

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