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Chemical and morphological evolution in Parmelia sect. Hypotrachyna: Product of ancient hybridization?

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Abstract

Nineteen species ofParmelia sect.Hypotrachyna that contain either barbatic acid or evernic acid and other related compounds fall into four major chemical types based upon biogenetic consideration of their secondary products. The major chemistries show clear correlations with geography, but groups based upon morphological characters do not. The origin of the present-day species can be explained by ancient hybridizations of chemically different types and subsequent parallel morphological evolution.

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Authors and Affiliations

  1. Department of Botany, Duke University, Durham, North Carolina

    Chicita F. Culberson

  2. Department of Botany, Smithsonian Institution, Washington, D.C.

    Mason E. Hale

Authors
  1. Chicita F. Culberson
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  2. Mason E. Hale
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Culberson, C.F., Hale, M.E. Chemical and morphological evolution in Parmelia sect. Hypotrachyna: Product of ancient hybridization?. Brittonia 25, 162–173 (1973). https://doi.org/10.2307/2805934

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