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The taxonomy of Jaltomata tlaxcala and Jaltomata procumbens (Solanaceae) : morphological distinctions and interfertility

Coe, Lawrence A. ;Central Connecticut State University. Department of Biological Sciences.

Thesis (M.A.) -- Central Connecticut State University, 1997. 1997

Available at Central Connecticut State University  CCSU Theses/Dissertations Stack 6  (Thesis 1451 )()

  • Title:
    The taxonomy of Jaltomata tlaxcala and Jaltomata procumbens (Solanaceae) : morphological distinctions and interfertility
  • Author/Creator: Coe, Lawrence A.
  • Central Connecticut State University. Department of Biological Sciences.
  • Publisher: Thesis (M.A.) -- Central Connecticut State University, 1997.
  • Creation Date: 1997
  • Language: English
  • Physical Description: vii, 64 leaves : ill. ; 29 cm.
  • Bibliography: Includes bibliographical references.
  • Subjects: Jaltomata procumbens; Solanaceae
  • Description: The genus Jaltomata of the nightshade family (Solanaceae) currently contains various unresolved taxonomic and phylogenetic questions at the species level. A new taxon designated Jaltomata tlaxcala (nom.ined.) is closely related to Jaltomata procumbens (Cav.) J.L. Gentry, but may be a distinct species. The relatedness of the two taxa is evaluated here through a study of morphology and interfertility toward a decision as to whether or not J. tlaxcala should be described as a new species. At least twelve characters are described which differ consistently between the two taxa. The results of this study are evaluated in the context of the Biological Species Concept (BSC) (Mayr, 1942), whereby species are defined on the basis of gene flow or the potential for gene flow. Species status is recommended here on the basis that a significant genetic discontinuity separates the two taxa, which appear to have experienced significantly different evolutionary histories.
  • Notes: Thesis (M.A.) -- Central Connecticut State University, 1997. ; Includes bibliographical references.
  • Degree Granted: Thesis (M.A.) -- Central Connecticut State University, 1997.
  • OCLC Number: 38025016